Home / 28,856.86-43,290.15-9,140.92

Finding the Fourth Proportional to 28,856.86, 43,290.15 and 9,140.92

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Solution

The fourth proportional to 28,856.86, 43,290.15 and 9,140.92 is: 13,712.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,856.86 : 43,290.15 = 9,140.92 : x
  2. Step 2: Convert to fraction form
    28,856.86/43,290.15 = 9,140.92/x
  3. Step 3: Cross multiply
    28,856.86x = 43,290.15 × 9,140.92
  4. Step 4: Simplify right side
    28,856.86x = 395,711,797.94
  5. Step 5: Solve for x
    x = 395,711,797.94/28,856.86
  6. Step 6: Final answer
    x = 13,712.92

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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.