Home / 21,527.62-29,708.76-13,031.28

Finding the Fourth Proportional to 21,527.62, 29,708.76 and 13,031.28

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Solution

The fourth proportional to 21,527.62, 29,708.76 and 13,031.28 is: 17,983.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,527.62 : 29,708.76 = 13,031.28 : x
  2. Step 2: Convert to fraction form
    21,527.62/29,708.76 = 13,031.28/x
  3. Step 3: Cross multiply
    21,527.62x = 29,708.76 × 13,031.28
  4. Step 4: Simplify right side
    21,527.62x = 387,143,170.01
  5. Step 5: Solve for x
    x = 387,143,170.01/21,527.62
  6. Step 6: Final answer
    x = 17,983.56

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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.