Home / 15,761.45-21,746.49-10,976.04

Finding the Fourth Proportional to 15,761.45, 21,746.49 and 10,976.04

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Solution

The fourth proportional to 15,761.45, 21,746.49 and 10,976.04 is: 15,143.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,761.45 : 21,746.49 = 10,976.04 : x
  2. Step 2: Convert to fraction form
    15,761.45/21,746.49 = 10,976.04/x
  3. Step 3: Cross multiply
    15,761.45x = 21,746.49 × 10,976.04
  4. Step 4: Simplify right side
    15,761.45x = 238,690,344.10
  5. Step 5: Solve for x
    x = 238,690,344.10/15,761.45
  6. Step 6: Final answer
    x = 15,143.93

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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.