Home / 28,499.60-39,329.57-15,579.13

Finding the Fourth Proportional to 28,499.60, 39,329.57 and 15,579.13

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Solution

The fourth proportional to 28,499.60, 39,329.57 and 15,579.13 is: 21,499.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,499.60 : 39,329.57 = 15,579.13 : x
  2. Step 2: Convert to fraction form
    28,499.60/39,329.57 = 15,579.13/x
  3. Step 3: Cross multiply
    28,499.60x = 39,329.57 × 15,579.13
  4. Step 4: Simplify right side
    28,499.60x = 612,720,405.98
  5. Step 5: Solve for x
    x = 612,720,405.98/28,499.60
  6. Step 6: Final answer
    x = 21,499.27

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1.5x scale

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.