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Finding the Fourth Proportional to 18,927.66, 26,119.10 and 10,859.61

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Solution

The fourth proportional to 18,927.66, 26,119.10 and 10,859.61 is: 14,985.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,927.66 : 26,119.10 = 10,859.61 : x
  2. Step 2: Convert to fraction form
    18,927.66/26,119.10 = 10,859.61/x
  3. Step 3: Cross multiply
    18,927.66x = 26,119.10 × 10,859.61
  4. Step 4: Simplify right side
    18,927.66x = 283,643,239.55
  5. Step 5: Solve for x
    x = 283,643,239.55/18,927.66
  6. Step 6: Final answer
    x = 14,985.65

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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.