Home / 11,531.28-15,911.98-6,494.70

Finding the Fourth Proportional to 11,531.28, 15,911.98 and 6,494.70

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Solution

The fourth proportional to 11,531.28, 15,911.98 and 6,494.70 is: 8,962.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,531.28 : 15,911.98 = 6,494.70 : x
  2. Step 2: Convert to fraction form
    11,531.28/15,911.98 = 6,494.70/x
  3. Step 3: Cross multiply
    11,531.28x = 15,911.98 × 6,494.70
  4. Step 4: Simplify right side
    11,531.28x = 103,343,536.51
  5. Step 5: Solve for x
    x = 103,343,536.51/11,531.28
  6. Step 6: Final answer
    x = 8,962.02

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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.