Home / 15,379.61-21,223.86-8,306.03

Finding the Fourth Proportional to 15,379.61, 21,223.86 and 8,306.03

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Solution

The fourth proportional to 15,379.61, 21,223.86 and 8,306.03 is: 11,462.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,379.61 : 21,223.86 = 8,306.03 : x
  2. Step 2: Convert to fraction form
    15,379.61/21,223.86 = 8,306.03/x
  3. Step 3: Cross multiply
    15,379.61x = 21,223.86 × 8,306.03
  4. Step 4: Simplify right side
    15,379.61x = 176,286,017.88
  5. Step 5: Solve for x
    x = 176,286,017.88/15,379.61
  6. Step 6: Final answer
    x = 11,462.32

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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.