Home / 10,988.20-16,449.90-10,347.40

Finding the Fourth Proportional to 10,988.20, 16,449.90 and 10,347.40

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Solution

The fourth proportional to 10,988.20, 16,449.90 and 10,347.40 is: 15,490.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,988.20 : 16,449.90 = 10,347.40 : x
  2. Step 2: Convert to fraction form
    10,988.20/16,449.90 = 10,347.40/x
  3. Step 3: Cross multiply
    10,988.20x = 16,449.90 × 10,347.40
  4. Step 4: Simplify right side
    10,988.20x = 170,213,695.26
  5. Step 5: Solve for x
    x = 170,213,695.26/10,988.20
  6. Step 6: Final answer
    x = 15,490.59

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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.