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Finding the Fourth Proportional to 18,008.84, 27,030.54 and 8,781.32

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Solution

The fourth proportional to 18,008.84, 27,030.54 and 8,781.32 is: 13,180.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,008.84 : 27,030.54 = 8,781.32 : x
  2. Step 2: Convert to fraction form
    18,008.84/27,030.54 = 8,781.32/x
  3. Step 3: Cross multiply
    18,008.84x = 27,030.54 × 8,781.32
  4. Step 4: Simplify right side
    18,008.84x = 237,363,821.51
  5. Step 5: Solve for x
    x = 237,363,821.51/18,008.84
  6. Step 6: Final answer
    x = 13,180.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.