Home / 10,941.28-15,071.84-8,702.48

Finding the Fourth Proportional to 10,941.28, 15,071.84 and 8,702.48

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Solution

The fourth proportional to 10,941.28, 15,071.84 and 8,702.48 is: 11,987.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,941.28 : 15,071.84 = 8,702.48 : x
  2. Step 2: Convert to fraction form
    10,941.28/15,071.84 = 8,702.48/x
  3. Step 3: Cross multiply
    10,941.28x = 15,071.84 × 8,702.48
  4. Step 4: Simplify right side
    10,941.28x = 131,162,386.16
  5. Step 5: Solve for x
    x = 131,162,386.16/10,941.28
  6. Step 6: Final answer
    x = 11,987.85

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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.