Home / 28,313.52-42,470.28-12,712.92

Finding the Fourth Proportional to 28,313.52, 42,470.28 and 12,712.92

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Solution

The fourth proportional to 28,313.52, 42,470.28 and 12,712.92 is: 19,069.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,313.52 : 42,470.28 = 12,712.92 : x
  2. Step 2: Convert to fraction form
    28,313.52/42,470.28 = 12,712.92/x
  3. Step 3: Cross multiply
    28,313.52x = 42,470.28 × 12,712.92
  4. Step 4: Simplify right side
    28,313.52x = 539,921,272.02
  5. Step 5: Solve for x
    x = 539,921,272.02/28,313.52
  6. Step 6: Final answer
    x = 19,069.38

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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.