Home / 15,669.20-23,503.80-5,139.20

Finding the Fourth Proportional to 15,669.20, 23,503.80 and 5,139.20

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Solution

The fourth proportional to 15,669.20, 23,503.80 and 5,139.20 is: 7,708.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,669.20 : 23,503.80 = 5,139.20 : x
  2. Step 2: Convert to fraction form
    15,669.20/23,503.80 = 5,139.20/x
  3. Step 3: Cross multiply
    15,669.20x = 23,503.80 × 5,139.20
  4. Step 4: Simplify right side
    15,669.20x = 120,790,728.96
  5. Step 5: Solve for x
    x = 120,790,728.96/15,669.20
  6. Step 6: Final answer
    x = 7,708.80

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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.