Home / 20,784,805.61-31,178,952.54-7,657,797.38

Finding the Fourth Proportional to 20,784,805.61, 31,178,952.54 and 7,657,797.38

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Solution

The fourth proportional to 20,784,805.61, 31,178,952.54 and 7,657,797.38 is: 11,487,338.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784,805.61 : 31,178,952.54 = 7,657,797.38 : x
  2. Step 2: Convert to fraction form
    20,784,805.61/31,178,952.54 = 7,657,797.38/x
  3. Step 3: Cross multiply
    20,784,805.61x = 31,178,952.54 × 7,657,797.38
  4. Step 4: Simplify right side
    20,784,805.61x = 238,762,100,916,061.56
  5. Step 5: Solve for x
    x = 238,762,100,916,061.56/20,784,805.61
  6. Step 6: Final answer
    x = 11,487,338.66

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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.