Home / 27,818.54-38,385.84-15,881.12

Finding the Fourth Proportional to 27,818.54, 38,385.84 and 15,881.12

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Solution

The fourth proportional to 27,818.54, 38,385.84 and 15,881.12 is: 21,913.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,818.54 : 38,385.84 = 15,881.12 : x
  2. Step 2: Convert to fraction form
    27,818.54/38,385.84 = 15,881.12/x
  3. Step 3: Cross multiply
    27,818.54x = 38,385.84 × 15,881.12
  4. Step 4: Simplify right side
    27,818.54x = 609,610,131.34
  5. Step 5: Solve for x
    x = 609,610,131.34/27,818.54
  6. Step 6: Final answer
    x = 21,913.81

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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.