Home / 10,891.80-15,031.02-6,176.28

Finding the Fourth Proportional to 10,891.80, 15,031.02 and 6,176.28

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Solution

The fourth proportional to 10,891.80, 15,031.02 and 6,176.28 is: 8,523.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,891.80 : 15,031.02 = 6,176.28 : x
  2. Step 2: Convert to fraction form
    10,891.80/15,031.02 = 6,176.28/x
  3. Step 3: Cross multiply
    10,891.80x = 15,031.02 × 6,176.28
  4. Step 4: Simplify right side
    10,891.80x = 92,835,788.21
  5. Step 5: Solve for x
    x = 92,835,788.21/10,891.80
  6. Step 6: Final answer
    x = 8,523.46

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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.