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Finding the Fourth Proportional to 16,868.52, 23,285.52 and 15,118.92

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Solution

The fourth proportional to 16,868.52, 23,285.52 and 15,118.92 is: 20,870.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,868.52 : 23,285.52 = 15,118.92 : x
  2. Step 2: Convert to fraction form
    16,868.52/23,285.52 = 15,118.92/x
  3. Step 3: Cross multiply
    16,868.52x = 23,285.52 × 15,118.92
  4. Step 4: Simplify right side
    16,868.52x = 352,051,914.04
  5. Step 5: Solve for x
    x = 352,051,914.04/16,868.52
  6. Step 6: Final answer
    x = 20,870.35

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Double scale
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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.