Home / 28,731,280.32-39,650,004.16-15,679,379.84

Finding the Fourth Proportional to 28,731,280.32, 39,650,004.16 and 15,679,379.84

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Solution

The fourth proportional to 28,731,280.32, 39,650,004.16 and 15,679,379.84 is: 21,638,001.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,731,280.32 : 39,650,004.16 = 15,679,379.84 : x
  2. Step 2: Convert to fraction form
    28,731,280.32/39,650,004.16 = 15,679,379.84/x
  3. Step 3: Cross multiply
    28,731,280.32x = 39,650,004.16 × 15,679,379.84
  4. Step 4: Simplify right side
    28,731,280.32x = 621,687,475,882,220.12
  5. Step 5: Solve for x
    x = 621,687,475,882,220.12/28,731,280.32
  6. Step 6: Final answer
    x = 21,638,001.12

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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.