Home / 9,000.72-12,421.25-5,021.75

Finding the Fourth Proportional to 9,000.72, 12,421.25 and 5,021.75

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Solution

The fourth proportional to 9,000.72, 12,421.25 and 5,021.75 is: 6,930.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,000.72 : 12,421.25 = 5,021.75 : x
  2. Step 2: Convert to fraction form
    9,000.72/12,421.25 = 5,021.75/x
  3. Step 3: Cross multiply
    9,000.72x = 12,421.25 × 5,021.75
  4. Step 4: Simplify right side
    9,000.72x = 62,376,367.09
  5. Step 5: Solve for x
    x = 62,376,367.09/9,000.72
  6. Step 6: Final answer
    x = 6,930.15

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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.