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Finding the Fourth Proportional to 27,885.51, 38,481.53 and 15,310.17

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Solution

The fourth proportional to 27,885.51, 38,481.53 and 15,310.17 is: 21,127.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,885.51 : 38,481.53 = 15,310.17 : x
  2. Step 2: Convert to fraction form
    27,885.51/38,481.53 = 15,310.17/x
  3. Step 3: Cross multiply
    27,885.51x = 38,481.53 × 15,310.17
  4. Step 4: Simplify right side
    27,885.51x = 589,158,689.61
  5. Step 5: Solve for x
    x = 589,158,689.61/27,885.51
  6. Step 6: Final answer
    x = 21,127.77

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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.