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Finding the Fourth Proportional to 27,881.70, 38,479.02 and 15,947.34

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Solution

The fourth proportional to 27,881.70, 38,479.02 and 15,947.34 is: 22,008.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,881.70 : 38,479.02 = 15,947.34 : x
  2. Step 2: Convert to fraction form
    27,881.70/38,479.02 = 15,947.34/x
  3. Step 3: Cross multiply
    27,881.70x = 38,479.02 × 15,947.34
  4. Step 4: Simplify right side
    27,881.70x = 613,638,014.81
  5. Step 5: Solve for x
    x = 613,638,014.81/27,881.70
  6. Step 6: Final answer
    x = 22,008.63

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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.