Home / 15,055.69-20,785.04-9,088.75

Finding the Fourth Proportional to 15,055.69, 20,785.04 and 9,088.75

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Solution

The fourth proportional to 15,055.69, 20,785.04 and 9,088.75 is: 12,547.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,055.69 : 20,785.04 = 9,088.75 : x
  2. Step 2: Convert to fraction form
    15,055.69/20,785.04 = 9,088.75/x
  3. Step 3: Cross multiply
    15,055.69x = 20,785.04 × 9,088.75
  4. Step 4: Simplify right side
    15,055.69x = 188,910,032.30
  5. Step 5: Solve for x
    x = 188,910,032.30/15,055.69
  6. Step 6: Final answer
    x = 12,547.42

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Half scale
Find fourth proportional to 30,111.38, 41,570.08 and 18,177.50
Double scale
Find fourth proportional to 15,056.69, 20,786.42 and 9,089.75
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.