Home / 21,381,647.20-32,072,470.80-20,121,935.20

Finding the Fourth Proportional to 21,381,647.20, 32,072,470.80 and 20,121,935.20

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Solution

The fourth proportional to 21,381,647.20, 32,072,470.80 and 20,121,935.20 is: 30,182,902.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,381,647.20 : 32,072,470.80 = 20,121,935.20 : x
  2. Step 2: Convert to fraction form
    21,381,647.20/32,072,470.80 = 20,121,935.20/x
  3. Step 3: Cross multiply
    21,381,647.20x = 32,072,470.80 × 20,121,935.20
  4. Step 4: Simplify right side
    21,381,647.20x = 645,360,179,141,492.12
  5. Step 5: Solve for x
    x = 645,360,179,141,492.12/21,381,647.20
  6. Step 6: Final answer
    x = 30,182,902.80

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1.5x scale

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.