Home / 9,912.13-13,677.48-5,434.70

Finding the Fourth Proportional to 9,912.13, 13,677.48 and 5,434.70

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Solution

The fourth proportional to 9,912.13, 13,677.48 and 5,434.70 is: 7,499.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,912.13 : 13,677.48 = 5,434.70 : x
  2. Step 2: Convert to fraction form
    9,912.13/13,677.48 = 5,434.70/x
  3. Step 3: Cross multiply
    9,912.13x = 13,677.48 × 5,434.70
  4. Step 4: Simplify right side
    9,912.13x = 74,332,973.38
  5. Step 5: Solve for x
    x = 74,332,973.38/9,912.13
  6. Step 6: Final answer
    x = 7,499.20

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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.