Home / 28,501.13-39,330.86-15,579.83

Finding the Fourth Proportional to 28,501.13, 39,330.86 and 15,579.83

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Solution

The fourth proportional to 28,501.13, 39,330.86 and 15,579.83 is: 21,499.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,501.13 : 39,330.86 = 15,579.83 : x
  2. Step 2: Convert to fraction form
    28,501.13/39,330.86 = 15,579.83/x
  3. Step 3: Cross multiply
    28,501.13x = 39,330.86 × 15,579.83
  4. Step 4: Simplify right side
    28,501.13x = 612,767,915.90
  5. Step 5: Solve for x
    x = 612,767,915.90/28,501.13
  6. Step 6: Final answer
    x = 21,499.78

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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.