Home / 21,261.40-29,381.19-15,946.99

Finding the Fourth Proportional to 21,261.40, 29,381.19 and 15,946.99

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Solution

The fourth proportional to 21,261.40, 29,381.19 and 15,946.99 is: 22,037.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,261.40 : 29,381.19 = 15,946.99 : x
  2. Step 2: Convert to fraction form
    21,261.40/29,381.19 = 15,946.99/x
  3. Step 3: Cross multiply
    21,261.40x = 29,381.19 × 15,946.99
  4. Step 4: Simplify right side
    21,261.40x = 468,541,543.12
  5. Step 5: Solve for x
    x = 468,541,543.12/21,261.40
  6. Step 6: Final answer
    x = 22,037.19

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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.