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Finding the Fourth Proportional to 18,384.61, 27,369 and 18,275.26

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Solution

The fourth proportional to 18,384.61, 27,369 and 18,275.26 is: 27,206.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,384.61 : 27,369 = 18,275.26 : x
  2. Step 2: Convert to fraction form
    18,384.61/27,369 = 18,275.26/x
  3. Step 3: Cross multiply
    18,384.61x = 27,369 × 18,275.26
  4. Step 4: Simplify right side
    18,384.61x = 500,175,590.94
  5. Step 5: Solve for x
    x = 500,175,590.94/18,384.61
  6. Step 6: Final answer
    x = 27,206.21

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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.