Home / 12,556.77-17,328.51-6,891.57

Finding the Fourth Proportional to 12,556.77, 17,328.51 and 6,891.57

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Solution

The fourth proportional to 12,556.77, 17,328.51 and 6,891.57 is: 9,510.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,556.77 : 17,328.51 = 6,891.57 : x
  2. Step 2: Convert to fraction form
    12,556.77/17,328.51 = 6,891.57/x
  3. Step 3: Cross multiply
    12,556.77x = 17,328.51 × 6,891.57
  4. Step 4: Simplify right side
    12,556.77x = 119,420,639.66
  5. Step 5: Solve for x
    x = 119,420,639.66/12,556.77
  6. Step 6: Final answer
    x = 9,510.46

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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.