Home / 20,498.72-30,715.68-15,477.32

Finding the Fourth Proportional to 20,498.72, 30,715.68 and 15,477.32

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Solution

The fourth proportional to 20,498.72, 30,715.68 and 15,477.32 is: 23,191.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,498.72 : 30,715.68 = 15,477.32 : x
  2. Step 2: Convert to fraction form
    20,498.72/30,715.68 = 15,477.32/x
  3. Step 3: Cross multiply
    20,498.72x = 30,715.68 × 15,477.32
  4. Step 4: Simplify right side
    20,498.72x = 475,396,254.80
  5. Step 5: Solve for x
    x = 475,396,254.80/20,498.72
  6. Step 6: Final answer
    x = 23,191.51

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1.5x scale

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.