Home / 55,607.40-83,411.10-20,539.80

Finding the Fourth Proportional to 55,607.40, 83,411.10 and 20,539.80

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Solution

The fourth proportional to 55,607.40, 83,411.10 and 20,539.80 is: 30,809.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,607.40 : 83,411.10 = 20,539.80 : x
  2. Step 2: Convert to fraction form
    55,607.40/83,411.10 = 20,539.80/x
  3. Step 3: Cross multiply
    55,607.40x = 83,411.10 × 20,539.80
  4. Step 4: Simplify right side
    55,607.40x = 1,713,247,311.78
  5. Step 5: Solve for x
    x = 1,713,247,311.78/55,607.40
  6. Step 6: Final answer
    x = 30,809.70

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Similar ratio
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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.