Home / 12,556.60-17,328.32-6,891.87

Finding the Fourth Proportional to 12,556.60, 17,328.32 and 6,891.87

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Solution

The fourth proportional to 12,556.60, 17,328.32 and 6,891.87 is: 9,510.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,556.60 : 17,328.32 = 6,891.87 : x
  2. Step 2: Convert to fraction form
    12,556.60/17,328.32 = 6,891.87/x
  3. Step 3: Cross multiply
    12,556.60x = 17,328.32 × 6,891.87
  4. Step 4: Simplify right side
    12,556.60x = 119,424,585.12
  5. Step 5: Solve for x
    x = 119,424,585.12/12,556.60
  6. Step 6: Final answer
    x = 9,510.90

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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.