Home / 21,438,041.80-32,157,062.70-12,368,115.40

Finding the Fourth Proportional to 21,438,041.80, 32,157,062.70 and 12,368,115.40

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Solution

The fourth proportional to 21,438,041.80, 32,157,062.70 and 12,368,115.40 is: 18,552,173.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438,041.80 : 32,157,062.70 = 12,368,115.40 : x
  2. Step 2: Convert to fraction form
    21,438,041.80/32,157,062.70 = 12,368,115.40/x
  3. Step 3: Cross multiply
    21,438,041.80x = 32,157,062.70 × 12,368,115.40
  4. Step 4: Simplify right side
    21,438,041.80x = 397,722,262,398,635.56
  5. Step 5: Solve for x
    x = 397,722,262,398,635.56/21,438,041.80
  6. Step 6: Final answer
    x = 18,552,173.10

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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.