Home / 18,685.90-25,785.57-11,612.17

Finding the Fourth Proportional to 18,685.90, 25,785.57 and 11,612.17

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Solution

The fourth proportional to 18,685.90, 25,785.57 and 11,612.17 is: 16,024.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,685.90 : 25,785.57 = 11,612.17 : x
  2. Step 2: Convert to fraction form
    18,685.90/25,785.57 = 11,612.17/x
  3. Step 3: Cross multiply
    18,685.90x = 25,785.57 × 11,612.17
  4. Step 4: Simplify right side
    18,685.90x = 299,426,422.39
  5. Step 5: Solve for x
    x = 299,426,422.39/18,685.90
  6. Step 6: Final answer
    x = 16,024.19

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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.