Home / 20,834.18-31,250.28-12,516.56

Finding the Fourth Proportional to 20,834.18, 31,250.28 and 12,516.56

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Solution

The fourth proportional to 20,834.18, 31,250.28 and 12,516.56 is: 18,774.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,834.18 : 31,250.28 = 12,516.56 : x
  2. Step 2: Convert to fraction form
    20,834.18/31,250.28 = 12,516.56/x
  3. Step 3: Cross multiply
    20,834.18x = 31,250.28 × 12,516.56
  4. Step 4: Simplify right side
    20,834.18x = 391,146,004.64
  5. Step 5: Solve for x
    x = 391,146,004.64/20,834.18
  6. Step 6: Final answer
    x = 18,774.25

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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.