Home / 18,701,961.40-28,005,702.90-12,277,430.20

Finding the Fourth Proportional to 18,701,961.40, 28,005,702.90 and 12,277,430.20

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Solution

The fourth proportional to 18,701,961.40, 28,005,702.90 and 12,277,430.20 is: 18,385,133.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,701,961.40 : 28,005,702.90 = 12,277,430.20 : x
  2. Step 2: Convert to fraction form
    18,701,961.40/28,005,702.90 = 12,277,430.20/x
  3. Step 3: Cross multiply
    18,701,961.40x = 28,005,702.90 × 12,277,430.20
  4. Step 4: Simplify right side
    18,701,961.40x = 343,838,062,556,687.56
  5. Step 5: Solve for x
    x = 343,838,062,556,687.56/18,701,961.40
  6. Step 6: Final answer
    x = 18,385,133.79

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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.