Home / 12,000.15-18,000.23-9,521.55

Finding the Fourth Proportional to 12,000.15, 18,000.23 and 9,521.55

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Solution

The fourth proportional to 12,000.15, 18,000.23 and 9,521.55 is: 14,282.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,000.15 : 18,000.23 = 9,521.55 : x
  2. Step 2: Convert to fraction form
    12,000.15/18,000.23 = 9,521.55/x
  3. Step 3: Cross multiply
    12,000.15x = 18,000.23 × 9,521.55
  4. Step 4: Simplify right side
    12,000.15x = 171,390,042.35
  5. Step 5: Solve for x
    x = 171,390,042.35/12,000.15
  6. Step 6: Final answer
    x = 14,282.33

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.