Home / 15,518.04-21,423.32-11,711.04

Finding the Fourth Proportional to 15,518.04, 21,423.32 and 11,711.04

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Solution

The fourth proportional to 15,518.04, 21,423.32 and 11,711.04 is: 16,167.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,518.04 : 21,423.32 = 11,711.04 : x
  2. Step 2: Convert to fraction form
    15,518.04/21,423.32 = 11,711.04/x
  3. Step 3: Cross multiply
    15,518.04x = 21,423.32 × 11,711.04
  4. Step 4: Simplify right side
    15,518.04x = 250,889,357.45
  5. Step 5: Solve for x
    x = 250,889,357.45/15,518.04
  6. Step 6: Final answer
    x = 16,167.59

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Half scale
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Double scale
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Similar ratio
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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.