Home / 28,013.27-38,658.41-15,438.02

Finding the Fourth Proportional to 28,013.27, 38,658.41 and 15,438.02

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Solution

The fourth proportional to 28,013.27, 38,658.41 and 15,438.02 is: 21,304.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,013.27 : 38,658.41 = 15,438.02 : x
  2. Step 2: Convert to fraction form
    28,013.27/38,658.41 = 15,438.02/x
  3. Step 3: Cross multiply
    28,013.27x = 38,658.41 × 15,438.02
  4. Step 4: Simplify right side
    28,013.27x = 596,809,036.27
  5. Step 5: Solve for x
    x = 596,809,036.27/28,013.27
  6. Step 6: Final answer
    x = 21,304.52

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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.