Home / 20,688.50-31,052.18-10,834.85

Finding the Fourth Proportional to 20,688.50, 31,052.18 and 10,834.85

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Solution

The fourth proportional to 20,688.50, 31,052.18 and 10,834.85 is: 16,262.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688.50 : 31,052.18 = 10,834.85 : x
  2. Step 2: Convert to fraction form
    20,688.50/31,052.18 = 10,834.85/x
  3. Step 3: Cross multiply
    20,688.50x = 31,052.18 × 10,834.85
  4. Step 4: Simplify right side
    20,688.50x = 336,445,712.47
  5. Step 5: Solve for x
    x = 336,445,712.47/20,688.50
  6. Step 6: Final answer
    x = 16,262.45

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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.