Home / 20,571,478.32-30,861,532.92-7,791,700.08

Finding the Fourth Proportional to 20,571,478.32, 30,861,532.92 and 7,791,700.08

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Solution

The fourth proportional to 20,571,478.32, 30,861,532.92 and 7,791,700.08 is: 11,689,184.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571,478.32 : 30,861,532.92 = 7,791,700.08 : x
  2. Step 2: Convert to fraction form
    20,571,478.32/30,861,532.92 = 7,791,700.08/x
  3. Step 3: Cross multiply
    20,571,478.32x = 30,861,532.92 × 7,791,700.08
  4. Step 4: Simplify right side
    20,571,478.32x = 240,463,808,521,686.66
  5. Step 5: Solve for x
    x = 240,463,808,521,686.66/20,571,478.32
  6. Step 6: Final answer
    x = 11,689,184.65

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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.