Home / 15,435.09-21,301.14-9,061.95

Finding the Fourth Proportional to 15,435.09, 21,301.14 and 9,061.95

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Solution

The fourth proportional to 15,435.09, 21,301.14 and 9,061.95 is: 12,505.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,435.09 : 21,301.14 = 9,061.95 : x
  2. Step 2: Convert to fraction form
    15,435.09/21,301.14 = 9,061.95/x
  3. Step 3: Cross multiply
    15,435.09x = 21,301.14 × 9,061.95
  4. Step 4: Simplify right side
    15,435.09x = 193,029,865.62
  5. Step 5: Solve for x
    x = 193,029,865.62/15,435.09
  6. Step 6: Final answer
    x = 12,505.91

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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.