Home / 28,013.34-38,658.57-15,438.09

Finding the Fourth Proportional to 28,013.34, 38,658.57 and 15,438.09

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Solution

The fourth proportional to 28,013.34, 38,658.57 and 15,438.09 is: 21,304.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,013.34 : 38,658.57 = 15,438.09 : x
  2. Step 2: Convert to fraction form
    28,013.34/38,658.57 = 15,438.09/x
  3. Step 3: Cross multiply
    28,013.34x = 38,658.57 × 15,438.09
  4. Step 4: Simplify right side
    28,013.34x = 596,814,570.01
  5. Step 5: Solve for x
    x = 596,814,570.01/28,013.34
  6. Step 6: Final answer
    x = 21,304.65

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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.