Home / 20,349.95-28,083.02-11,857.90

Finding the Fourth Proportional to 20,349.95, 28,083.02 and 11,857.90

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Solution

The fourth proportional to 20,349.95, 28,083.02 and 11,857.90 is: 16,363.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,349.95 : 28,083.02 = 11,857.90 : x
  2. Step 2: Convert to fraction form
    20,349.95/28,083.02 = 11,857.90/x
  3. Step 3: Cross multiply
    20,349.95x = 28,083.02 × 11,857.90
  4. Step 4: Simplify right side
    20,349.95x = 333,005,513.58
  5. Step 5: Solve for x
    x = 333,005,513.58/20,349.95
  6. Step 6: Final answer
    x = 16,363.95

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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.