Home / 27,642.52-38,148.27-20,916.49

Finding the Fourth Proportional to 27,642.52, 38,148.27 and 20,916.49

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Solution

The fourth proportional to 27,642.52, 38,148.27 and 20,916.49 is: 28,865.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,642.52 : 38,148.27 = 20,916.49 : x
  2. Step 2: Convert to fraction form
    27,642.52/38,148.27 = 20,916.49/x
  3. Step 3: Cross multiply
    27,642.52x = 38,148.27 × 20,916.49
  4. Step 4: Simplify right side
    27,642.52x = 797,927,907.97
  5. Step 5: Solve for x
    x = 797,927,907.97/27,642.52
  6. Step 6: Final answer
    x = 28,865.96

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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.