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Finding the Fourth Proportional to 18,699.48, 27,866.95 and 18,159.72

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Solution

The fourth proportional to 18,699.48, 27,866.95 and 18,159.72 is: 27,062.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,699.48 : 27,866.95 = 18,159.72 : x
  2. Step 2: Convert to fraction form
    18,699.48/27,866.95 = 18,159.72/x
  3. Step 3: Cross multiply
    18,699.48x = 27,866.95 × 18,159.72
  4. Step 4: Simplify right side
    18,699.48x = 506,055,859.35
  5. Step 5: Solve for x
    x = 506,055,859.35/18,699.48
  6. Step 6: Final answer
    x = 27,062.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.