Home / 28,113.18-42,165.42-12,314.76

Finding the Fourth Proportional to 28,113.18, 42,165.42 and 12,314.76

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Solution

The fourth proportional to 28,113.18, 42,165.42 and 12,314.76 is: 18,470.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,113.18 : 42,165.42 = 12,314.76 : x
  2. Step 2: Convert to fraction form
    28,113.18/42,165.42 = 12,314.76/x
  3. Step 3: Cross multiply
    28,113.18x = 42,165.42 × 12,314.76
  4. Step 4: Simplify right side
    28,113.18x = 519,257,027.60
  5. Step 5: Solve for x
    x = 519,257,027.60/28,113.18
  6. Step 6: Final answer
    x = 18,470.23

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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.