Home / 30,753.47-42,446.70-20,136.94

Finding the Fourth Proportional to 30,753.47, 42,446.70 and 20,136.94

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Solution

The fourth proportional to 30,753.47, 42,446.70 and 20,136.94 is: 27,793.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,753.47 : 42,446.70 = 20,136.94 : x
  2. Step 2: Convert to fraction form
    30,753.47/42,446.70 = 20,136.94/x
  3. Step 3: Cross multiply
    30,753.47x = 42,446.70 × 20,136.94
  4. Step 4: Simplify right side
    30,753.47x = 854,746,544.98
  5. Step 5: Solve for x
    x = 854,746,544.98/30,753.47
  6. Step 6: Final answer
    x = 27,793.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.