Home / 12,585.20-17,369.34-7,209.32

Finding the Fourth Proportional to 12,585.20, 17,369.34 and 7,209.32

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Solution

The fourth proportional to 12,585.20, 17,369.34 and 7,209.32 is: 9,949.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,585.20 : 17,369.34 = 7,209.32 : x
  2. Step 2: Convert to fraction form
    12,585.20/17,369.34 = 7,209.32/x
  3. Step 3: Cross multiply
    12,585.20x = 17,369.34 × 7,209.32
  4. Step 4: Simplify right side
    12,585.20x = 125,221,130.25
  5. Step 5: Solve for x
    x = 125,221,130.25/12,585.20
  6. Step 6: Final answer
    x = 9,949.87

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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.