Home / 12,102,402.70-18,153,604.05-12,018,421.90

Finding the Fourth Proportional to 12,102,402.70, 18,153,604.05 and 12,018,421.90

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Solution

The fourth proportional to 12,102,402.70, 18,153,604.05 and 12,018,421.90 is: 18,027,632.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,102,402.70 : 18,153,604.05 = 12,018,421.90 : x
  2. Step 2: Convert to fraction form
    12,102,402.70/18,153,604.05 = 12,018,421.90/x
  3. Step 3: Cross multiply
    12,102,402.70x = 18,153,604.05 × 12,018,421.90
  4. Step 4: Simplify right side
    12,102,402.70x = 218,177,672,478,448.72
  5. Step 5: Solve for x
    x = 218,177,672,478,448.72/12,102,402.70
  6. Step 6: Final answer
    x = 18,027,632.85

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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.