Home / 11,426.40-17,139.60-5,282.40

Finding the Fourth Proportional to 11,426.40, 17,139.60 and 5,282.40

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Solution

The fourth proportional to 11,426.40, 17,139.60 and 5,282.40 is: 7,923.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,426.40 : 17,139.60 = 5,282.40 : x
  2. Step 2: Convert to fraction form
    11,426.40/17,139.60 = 5,282.40/x
  3. Step 3: Cross multiply
    11,426.40x = 17,139.60 × 5,282.40
  4. Step 4: Simplify right side
    11,426.40x = 90,538,223.04
  5. Step 5: Solve for x
    x = 90,538,223.04/11,426.40
  6. Step 6: Final answer
    x = 7,923.60

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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.