Home / 14,253.11-21,275.28-12,569.76

Finding the Fourth Proportional to 14,253.11, 21,275.28 and 12,569.76

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Solution

The fourth proportional to 14,253.11, 21,275.28 and 12,569.76 is: 18,762.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,253.11 : 21,275.28 = 12,569.76 : x
  2. Step 2: Convert to fraction form
    14,253.11/21,275.28 = 12,569.76/x
  3. Step 3: Cross multiply
    14,253.11x = 21,275.28 × 12,569.76
  4. Step 4: Simplify right side
    14,253.11x = 267,425,163.53
  5. Step 5: Solve for x
    x = 267,425,163.53/14,253.11
  6. Step 6: Final answer
    x = 18,762.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.