Home / 9,421.39-13,000.87-5,229.31

Finding the Fourth Proportional to 9,421.39, 13,000.87 and 5,229.31

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Solution

The fourth proportional to 9,421.39, 13,000.87 and 5,229.31 is: 7,216.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,421.39 : 13,000.87 = 5,229.31 : x
  2. Step 2: Convert to fraction form
    9,421.39/13,000.87 = 5,229.31/x
  3. Step 3: Cross multiply
    9,421.39x = 13,000.87 × 5,229.31
  4. Step 4: Simplify right side
    9,421.39x = 67,985,618.54
  5. Step 5: Solve for x
    x = 67,985,618.54/9,421.39
  6. Step 6: Final answer
    x = 7,216.09

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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.