Home / 28,718.40-43,077.60-8,998.95

Finding the Fourth Proportional to 28,718.40, 43,077.60 and 8,998.95

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Solution

The fourth proportional to 28,718.40, 43,077.60 and 8,998.95 is: 13,498.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,718.40 : 43,077.60 = 8,998.95 : x
  2. Step 2: Convert to fraction form
    28,718.40/43,077.60 = 8,998.95/x
  3. Step 3: Cross multiply
    28,718.40x = 43,077.60 × 8,998.95
  4. Step 4: Simplify right side
    28,718.40x = 387,653,168.52
  5. Step 5: Solve for x
    x = 387,653,168.52/28,718.40
  6. Step 6: Final answer
    x = 13,498.43

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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.