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Finding the Fourth Proportional to 18,855, 26,020.71 and 10,471.50

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Solution

The fourth proportional to 18,855, 26,020.71 and 10,471.50 is: 14,451.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,855 : 26,020.71 = 10,471.50 : x
  2. Step 2: Convert to fraction form
    18,855/26,020.71 = 10,471.50/x
  3. Step 3: Cross multiply
    18,855x = 26,020.71 × 10,471.50
  4. Step 4: Simplify right side
    18,855x = 272,475,864.77
  5. Step 5: Solve for x
    x = 272,475,864.77/18,855
  6. Step 6: Final answer
    x = 14,451.12

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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.