Home / 28,386.12-42,542.96-12,586.62

Finding the Fourth Proportional to 28,386.12, 42,542.96 and 12,586.62

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Solution

The fourth proportional to 28,386.12, 42,542.96 and 12,586.62 is: 18,863.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,386.12 : 42,542.96 = 12,586.62 : x
  2. Step 2: Convert to fraction form
    28,386.12/42,542.96 = 12,586.62/x
  3. Step 3: Cross multiply
    28,386.12x = 42,542.96 × 12,586.62
  4. Step 4: Simplify right side
    28,386.12x = 535,472,008.26
  5. Step 5: Solve for x
    x = 535,472,008.26/28,386.12
  6. Step 6: Final answer
    x = 18,863.87

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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.