Home / 35,515.68-49,031.28-21,372

Finding the Fourth Proportional to 35,515.68, 49,031.28 and 21,372

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Solution

The fourth proportional to 35,515.68, 49,031.28 and 21,372 is: 29,505.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,515.68 : 49,031.28 = 21,372 : x
  2. Step 2: Convert to fraction form
    35,515.68/49,031.28 = 21,372/x
  3. Step 3: Cross multiply
    35,515.68x = 49,031.28 × 21,372
  4. Step 4: Simplify right side
    35,515.68x = 1,047,896,516.16
  5. Step 5: Solve for x
    x = 1,047,896,516.16/35,515.68
  6. Step 6: Final answer
    x = 29,505.18

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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.