Home / 20,498.61-28,295.16-12,003.47

Finding the Fourth Proportional to 20,498.61, 28,295.16 and 12,003.47

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Solution

The fourth proportional to 20,498.61, 28,295.16 and 12,003.47 is: 16,568.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,498.61 : 28,295.16 = 12,003.47 : x
  2. Step 2: Convert to fraction form
    20,498.61/28,295.16 = 12,003.47/x
  3. Step 3: Cross multiply
    20,498.61x = 28,295.16 × 12,003.47
  4. Step 4: Simplify right side
    20,498.61x = 339,639,962.73
  5. Step 5: Solve for x
    x = 339,639,962.73/20,498.61
  6. Step 6: Final answer
    x = 16,568.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.