Home / 28,242,305.80-38,972,243.10-15,850,005.87

Finding the Fourth Proportional to 28,242,305.80, 38,972,243.10 and 15,850,005.87

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Solution

The fourth proportional to 28,242,305.80, 38,972,243.10 and 15,850,005.87 is: 21,871,807.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,242,305.80 : 38,972,243.10 = 15,850,005.87 : x
  2. Step 2: Convert to fraction form
    28,242,305.80/38,972,243.10 = 15,850,005.87/x
  3. Step 3: Cross multiply
    28,242,305.80x = 38,972,243.10 × 15,850,005.87
  4. Step 4: Simplify right side
    28,242,305.80x = 617,710,281,745,198.88
  5. Step 5: Solve for x
    x = 617,710,281,745,198.88/28,242,305.80
  6. Step 6: Final answer
    x = 21,871,807.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.