Home / 20,966.43-31,408.13-13,576.10

Finding the Fourth Proportional to 20,966.43, 31,408.13 and 13,576.10

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Solution

The fourth proportional to 20,966.43, 31,408.13 and 13,576.10 is: 20,337.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.43 : 31,408.13 = 13,576.10 : x
  2. Step 2: Convert to fraction form
    20,966.43/31,408.13 = 13,576.10/x
  3. Step 3: Cross multiply
    20,966.43x = 31,408.13 × 13,576.10
  4. Step 4: Simplify right side
    20,966.43x = 426,399,688.77
  5. Step 5: Solve for x
    x = 426,399,688.77/20,966.43
  6. Step 6: Final answer
    x = 20,337.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.