Home / 20,818.62-31,248.99-12,070.62

Finding the Fourth Proportional to 20,818.62, 31,248.99 and 12,070.62

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Solution

The fourth proportional to 20,818.62, 31,248.99 and 12,070.62 is: 18,118.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,818.62 : 31,248.99 = 12,070.62 : x
  2. Step 2: Convert to fraction form
    20,818.62/31,248.99 = 12,070.62/x
  3. Step 3: Cross multiply
    20,818.62x = 31,248.99 × 12,070.62
  4. Step 4: Simplify right side
    20,818.62x = 377,194,683.67
  5. Step 5: Solve for x
    x = 377,194,683.67/20,818.62
  6. Step 6: Final answer
    x = 18,118.14

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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.