Home / 21,438,040.80-32,157,061.20-12,368,114.40

Finding the Fourth Proportional to 21,438,040.80, 32,157,061.20 and 12,368,114.40

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Solution

The fourth proportional to 21,438,040.80, 32,157,061.20 and 12,368,114.40 is: 18,552,171.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438,040.80 : 32,157,061.20 = 12,368,114.40 : x
  2. Step 2: Convert to fraction form
    21,438,040.80/32,157,061.20 = 12,368,114.40/x
  3. Step 3: Cross multiply
    21,438,040.80x = 32,157,061.20 × 12,368,114.40
  4. Step 4: Simplify right side
    21,438,040.80x = 397,722,211,689,401.31
  5. Step 5: Solve for x
    x = 397,722,211,689,401.31/21,438,040.80
  6. Step 6: Final answer
    x = 18,552,171.60

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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.