Home / 15,074.22-20,802.15-8,359.50

Finding the Fourth Proportional to 15,074.22, 20,802.15 and 8,359.50

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Solution

The fourth proportional to 15,074.22, 20,802.15 and 8,359.50 is: 11,535.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,074.22 : 20,802.15 = 8,359.50 : x
  2. Step 2: Convert to fraction form
    15,074.22/20,802.15 = 8,359.50/x
  3. Step 3: Cross multiply
    15,074.22x = 20,802.15 × 8,359.50
  4. Step 4: Simplify right side
    15,074.22x = 173,895,572.93
  5. Step 5: Solve for x
    x = 173,895,572.93/15,074.22
  6. Step 6: Final answer
    x = 11,535.96

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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.