Home / 9,116.88-13,670.10-5,421.69

Finding the Fourth Proportional to 9,116.88, 13,670.10 and 5,421.69

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Solution

The fourth proportional to 9,116.88, 13,670.10 and 5,421.69 is: 8,129.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,116.88 : 13,670.10 = 5,421.69 : x
  2. Step 2: Convert to fraction form
    9,116.88/13,670.10 = 5,421.69/x
  3. Step 3: Cross multiply
    9,116.88x = 13,670.10 × 5,421.69
  4. Step 4: Simplify right side
    9,116.88x = 74,115,044.47
  5. Step 5: Solve for x
    x = 74,115,044.47/9,116.88
  6. Step 6: Final answer
    x = 8,129.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.