Home / 15,478.02-21,352.82-9,186.75

Finding the Fourth Proportional to 15,478.02, 21,352.82 and 9,186.75

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Solution

The fourth proportional to 15,478.02, 21,352.82 and 9,186.75 is: 12,673.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,478.02 : 21,352.82 = 9,186.75 : x
  2. Step 2: Convert to fraction form
    15,478.02/21,352.82 = 9,186.75/x
  3. Step 3: Cross multiply
    15,478.02x = 21,352.82 × 9,186.75
  4. Step 4: Simplify right side
    15,478.02x = 196,162,973.20
  5. Step 5: Solve for x
    x = 196,162,973.20/15,478.02
  6. Step 6: Final answer
    x = 12,673.65

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Half scale
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Double scale
Find fourth proportional to 15,479.02, 21,354.19 and 9,187.75
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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.