Home / 21,242.28-29,301.45-15,282.03

Finding the Fourth Proportional to 21,242.28, 29,301.45 and 15,282.03

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Solution

The fourth proportional to 21,242.28, 29,301.45 and 15,282.03 is: 21,079.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,242.28 : 29,301.45 = 15,282.03 : x
  2. Step 2: Convert to fraction form
    21,242.28/29,301.45 = 15,282.03/x
  3. Step 3: Cross multiply
    21,242.28x = 29,301.45 × 15,282.03
  4. Step 4: Simplify right side
    21,242.28x = 447,785,690.52
  5. Step 5: Solve for x
    x = 447,785,690.52/21,242.28
  6. Step 6: Final answer
    x = 21,079.92

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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.