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Finding the Fourth Proportional to 27,900.92, 38,501.88 and 15,326.12

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Solution

The fourth proportional to 27,900.92, 38,501.88 and 15,326.12 is: 21,149.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,900.92 : 38,501.88 = 15,326.12 : x
  2. Step 2: Convert to fraction form
    27,900.92/38,501.88 = 15,326.12/x
  3. Step 3: Cross multiply
    27,900.92x = 38,501.88 × 15,326.12
  4. Step 4: Simplify right side
    27,900.92x = 590,084,433.11
  5. Step 5: Solve for x
    x = 590,084,433.11/27,900.92
  6. Step 6: Final answer
    x = 21,149.28

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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.