Home / 15,621.53-21,535.47-9,649.19

Finding the Fourth Proportional to 15,621.53, 21,535.47 and 9,649.19

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Solution

The fourth proportional to 15,621.53, 21,535.47 and 9,649.19 is: 13,302.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,621.53 : 21,535.47 = 9,649.19 : x
  2. Step 2: Convert to fraction form
    15,621.53/21,535.47 = 9,649.19/x
  3. Step 3: Cross multiply
    15,621.53x = 21,535.47 × 9,649.19
  4. Step 4: Simplify right side
    15,621.53x = 207,799,895.61
  5. Step 5: Solve for x
    x = 207,799,895.61/15,621.53
  6. Step 6: Final answer
    x = 13,302.15

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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.