Home / 9,116.38-13,669.35-5,421.19

Finding the Fourth Proportional to 9,116.38, 13,669.35 and 5,421.19

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Solution

The fourth proportional to 9,116.38, 13,669.35 and 5,421.19 is: 8,128.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,116.38 : 13,669.35 = 5,421.19 : x
  2. Step 2: Convert to fraction form
    9,116.38/13,669.35 = 5,421.19/x
  3. Step 3: Cross multiply
    9,116.38x = 13,669.35 × 5,421.19
  4. Step 4: Simplify right side
    9,116.38x = 74,104,143.53
  5. Step 5: Solve for x
    x = 74,104,143.53/9,116.38
  6. Step 6: Final answer
    x = 8,128.68

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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.