Home / 20,760,382.28-31,141,438.71-7,122,909.12

Finding the Fourth Proportional to 20,760,382.28, 31,141,438.71 and 7,122,909.12

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Solution

The fourth proportional to 20,760,382.28, 31,141,438.71 and 7,122,909.12 is: 10,684,660.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760,382.28 : 31,141,438.71 = 7,122,909.12 : x
  2. Step 2: Convert to fraction form
    20,760,382.28/31,141,438.71 = 7,122,909.12/x
  3. Step 3: Cross multiply
    20,760,382.28x = 31,141,438.71 × 7,122,909.12
  4. Step 4: Simplify right side
    20,760,382.28x = 221,817,637,653,888.75
  5. Step 5: Solve for x
    x = 221,817,637,653,888.75/20,760,382.28
  6. Step 6: Final answer
    x = 10,684,660.55

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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.