Home / 21,004,575.20-31,506,862.80-8,220,831.20

Finding the Fourth Proportional to 21,004,575.20, 31,506,862.80 and 8,220,831.20

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Solution

The fourth proportional to 21,004,575.20, 31,506,862.80 and 8,220,831.20 is: 12,331,246.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004,575.20 : 31,506,862.80 = 8,220,831.20 : x
  2. Step 2: Convert to fraction form
    21,004,575.20/31,506,862.80 = 8,220,831.20/x
  3. Step 3: Cross multiply
    21,004,575.20x = 31,506,862.80 × 8,220,831.20
  4. Step 4: Simplify right side
    21,004,575.20x = 259,012,600,720,359.38
  5. Step 5: Solve for x
    x = 259,012,600,720,359.38/21,004,575.20
  6. Step 6: Final answer
    x = 12,331,246.80

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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.