Home / 20,813,378.08-31,179,670.80-15,338,529.76

Finding the Fourth Proportional to 20,813,378.08, 31,179,670.80 and 15,338,529.76

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Solution

The fourth proportional to 20,813,378.08, 31,179,670.80 and 15,338,529.76 is: 22,978,024.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,813,378.08 : 31,179,670.80 = 15,338,529.76 : x
  2. Step 2: Convert to fraction form
    20,813,378.08/31,179,670.80 = 15,338,529.76/x
  3. Step 3: Cross multiply
    20,813,378.08x = 31,179,670.80 × 15,338,529.76
  4. Step 4: Simplify right side
    20,813,378.08x = 478,250,308,472,803
  5. Step 5: Solve for x
    x = 478,250,308,472,803/20,813,378.08
  6. Step 6: Final answer
    x = 22,978,024.36

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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.