Home / 16,990.12-25,475.20-5,140.33

Finding the Fourth Proportional to 16,990.12, 25,475.20 and 5,140.33

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Solution

The fourth proportional to 16,990.12, 25,475.20 and 5,140.33 is: 7,707.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,990.12 : 25,475.20 = 5,140.33 : x
  2. Step 2: Convert to fraction form
    16,990.12/25,475.20 = 5,140.33/x
  3. Step 3: Cross multiply
    16,990.12x = 25,475.20 × 5,140.33
  4. Step 4: Simplify right side
    16,990.12x = 130,950,934.82
  5. Step 5: Solve for x
    x = 130,950,934.82/16,990.12
  6. Step 6: Final answer
    x = 7,707.48

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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.