Home / 10,411.80-15,617.70-8,856.60

Finding the Fourth Proportional to 10,411.80, 15,617.70 and 8,856.60

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Solution

The fourth proportional to 10,411.80, 15,617.70 and 8,856.60 is: 13,284.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,411.80 : 15,617.70 = 8,856.60 : x
  2. Step 2: Convert to fraction form
    10,411.80/15,617.70 = 8,856.60/x
  3. Step 3: Cross multiply
    10,411.80x = 15,617.70 × 8,856.60
  4. Step 4: Simplify right side
    10,411.80x = 138,319,721.82
  5. Step 5: Solve for x
    x = 138,319,721.82/10,411.80
  6. Step 6: Final answer
    x = 13,284.90

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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.