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Finding the Fourth Proportional to 26,394, 36,423.86 and 19,685.58

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Solution

The fourth proportional to 26,394, 36,423.86 and 19,685.58 is: 27,166.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,394 : 36,423.86 = 19,685.58 : x
  2. Step 2: Convert to fraction form
    26,394/36,423.86 = 19,685.58/x
  3. Step 3: Cross multiply
    26,394x = 36,423.86 × 19,685.58
  4. Step 4: Simplify right side
    26,394x = 717,024,711.51
  5. Step 5: Solve for x
    x = 717,024,711.51/26,394
  6. Step 6: Final answer
    x = 27,166.20

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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.