Home / 21,018,540.80-31,527,811.20-9,681,132.80

Finding the Fourth Proportional to 21,018,540.80, 31,527,811.20 and 9,681,132.80

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Solution

The fourth proportional to 21,018,540.80, 31,527,811.20 and 9,681,132.80 is: 14,521,699.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,018,540.80 : 31,527,811.20 = 9,681,132.80 : x
  2. Step 2: Convert to fraction form
    21,018,540.80/31,527,811.20 = 9,681,132.80/x
  3. Step 3: Cross multiply
    21,018,540.80x = 31,527,811.20 × 9,681,132.80
  4. Step 4: Simplify right side
    21,018,540.80x = 305,224,927,120,527.38
  5. Step 5: Solve for x
    x = 305,224,927,120,527.38/21,018,540.80
  6. Step 6: Final answer
    x = 14,521,699.20

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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.