Home / 28,545.20-42,813.24-7,485.68

Finding the Fourth Proportional to 28,545.20, 42,813.24 and 7,485.68

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Solution

The fourth proportional to 28,545.20, 42,813.24 and 7,485.68 is: 11,227.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,545.20 : 42,813.24 = 7,485.68 : x
  2. Step 2: Convert to fraction form
    28,545.20/42,813.24 = 7,485.68/x
  3. Step 3: Cross multiply
    28,545.20x = 42,813.24 × 7,485.68
  4. Step 4: Simplify right side
    28,545.20x = 320,486,214.40
  5. Step 5: Solve for x
    x = 320,486,214.40/28,545.20
  6. Step 6: Final answer
    x = 11,227.32

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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.