Home / 21,325.12-29,397.51-14,931.56

Finding the Fourth Proportional to 21,325.12, 29,397.51 and 14,931.56

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Solution

The fourth proportional to 21,325.12, 29,397.51 and 14,931.56 is: 20,583.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.12 : 29,397.51 = 14,931.56 : x
  2. Step 2: Convert to fraction form
    21,325.12/29,397.51 = 14,931.56/x
  3. Step 3: Cross multiply
    21,325.12x = 29,397.51 × 14,931.56
  4. Step 4: Simplify right side
    21,325.12x = 438,950,757.91
  5. Step 5: Solve for x
    x = 438,950,757.91/21,325.12
  6. Step 6: Final answer
    x = 20,583.74

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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.