Home / 28,130.70-42,174.99-9,399.87

Finding the Fourth Proportional to 28,130.70, 42,174.99 and 9,399.87

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Solution

The fourth proportional to 28,130.70, 42,174.99 and 9,399.87 is: 14,092.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,130.70 : 42,174.99 = 9,399.87 : x
  2. Step 2: Convert to fraction form
    28,130.70/42,174.99 = 9,399.87/x
  3. Step 3: Cross multiply
    28,130.70x = 42,174.99 × 9,399.87
  4. Step 4: Simplify right side
    28,130.70x = 396,439,423.25
  5. Step 5: Solve for x
    x = 396,439,423.25/28,130.70
  6. Step 6: Final answer
    x = 14,092.77

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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.