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Finding the Fourth Proportional to 26,447, 36,479.76 and 18,486.32

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Solution

The fourth proportional to 26,447, 36,479.76 and 18,486.32 is: 25,499.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,447 : 36,479.76 = 18,486.32 : x
  2. Step 2: Convert to fraction form
    26,447/36,479.76 = 18,486.32/x
  3. Step 3: Cross multiply
    26,447x = 36,479.76 × 18,486.32
  4. Step 4: Simplify right side
    26,447x = 674,376,516.88
  5. Step 5: Solve for x
    x = 674,376,516.88/26,447
  6. Step 6: Final answer
    x = 25,499.17

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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.