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Finding the Fourth Proportional to 18,908.64, 26,117.64 and 15,934.32

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Solution

The fourth proportional to 18,908.64, 26,117.64 and 15,934.32 is: 22,009.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,908.64 : 26,117.64 = 15,934.32 : x
  2. Step 2: Convert to fraction form
    18,908.64/26,117.64 = 15,934.32/x
  3. Step 3: Cross multiply
    18,908.64x = 26,117.64 × 15,934.32
  4. Step 4: Simplify right side
    18,908.64x = 416,166,833.40
  5. Step 5: Solve for x
    x = 416,166,833.40/18,908.64
  6. Step 6: Final answer
    x = 22,009.35

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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.