Home / 27,917.80-38,528.51-15,818.18

Finding the Fourth Proportional to 27,917.80, 38,528.51 and 15,818.18

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Solution

The fourth proportional to 27,917.80, 38,528.51 and 15,818.18 is: 21,830.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,917.80 : 38,528.51 = 15,818.18 : x
  2. Step 2: Convert to fraction form
    27,917.80/38,528.51 = 15,818.18/x
  3. Step 3: Cross multiply
    27,917.80x = 38,528.51 × 15,818.18
  4. Step 4: Simplify right side
    27,917.80x = 609,450,634.58
  5. Step 5: Solve for x
    x = 609,450,634.58/27,917.80
  6. Step 6: Final answer
    x = 21,830.18

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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.