Home / 28,259.80-42,393.60-9,545.20

Finding the Fourth Proportional to 28,259.80, 42,393.60 and 9,545.20

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Solution

The fourth proportional to 28,259.80, 42,393.60 and 9,545.20 is: 14,319.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,259.80 : 42,393.60 = 9,545.20 : x
  2. Step 2: Convert to fraction form
    28,259.80/42,393.60 = 9,545.20/x
  3. Step 3: Cross multiply
    28,259.80x = 42,393.60 × 9,545.20
  4. Step 4: Simplify right side
    28,259.80x = 404,655,390.72
  5. Step 5: Solve for x
    x = 404,655,390.72/28,259.80
  6. Step 6: Final answer
    x = 14,319.12

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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.