Home / 20,079.84-30,114.80-9,545.12

Finding the Fourth Proportional to 20,079.84, 30,114.80 and 9,545.12

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Solution

The fourth proportional to 20,079.84, 30,114.80 and 9,545.12 is: 14,315.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.84 : 30,114.80 = 9,545.12 : x
  2. Step 2: Convert to fraction form
    20,079.84/30,114.80 = 9,545.12/x
  3. Step 3: Cross multiply
    20,079.84x = 30,114.80 × 9,545.12
  4. Step 4: Simplify right side
    20,079.84x = 287,449,379.78
  5. Step 5: Solve for x
    x = 287,449,379.78/20,079.84
  6. Step 6: Final answer
    x = 14,315.32

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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.