Home / 15,409.69-21,265.38-8,696.75

Finding the Fourth Proportional to 15,409.69, 21,265.38 and 8,696.75

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Solution

The fourth proportional to 15,409.69, 21,265.38 and 8,696.75 is: 12,001.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,409.69 : 21,265.38 = 8,696.75 : x
  2. Step 2: Convert to fraction form
    15,409.69/21,265.38 = 8,696.75/x
  3. Step 3: Cross multiply
    15,409.69x = 21,265.38 × 8,696.75
  4. Step 4: Simplify right side
    15,409.69x = 184,939,587.19
  5. Step 5: Solve for x
    x = 184,939,587.19/15,409.69
  6. Step 6: Final answer
    x = 12,001.51

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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.