Home / 21,931.26-30,264.39-12,502.86

Finding the Fourth Proportional to 21,931.26, 30,264.39 and 12,502.86

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Solution

The fourth proportional to 21,931.26, 30,264.39 and 12,502.86 is: 17,253.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,931.26 : 30,264.39 = 12,502.86 : x
  2. Step 2: Convert to fraction form
    21,931.26/30,264.39 = 12,502.86/x
  3. Step 3: Cross multiply
    21,931.26x = 30,264.39 × 12,502.86
  4. Step 4: Simplify right side
    21,931.26x = 378,391,431.16
  5. Step 5: Solve for x
    x = 378,391,431.16/21,931.26
  6. Step 6: Final answer
    x = 17,253.52

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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.