Home / 13,945.20-19,244.58-7,657.57

Finding the Fourth Proportional to 13,945.20, 19,244.58 and 7,657.57

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Solution

The fourth proportional to 13,945.20, 19,244.58 and 7,657.57 is: 10,567.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,945.20 : 19,244.58 = 7,657.57 : x
  2. Step 2: Convert to fraction form
    13,945.20/19,244.58 = 7,657.57/x
  3. Step 3: Cross multiply
    13,945.20x = 19,244.58 × 7,657.57
  4. Step 4: Simplify right side
    13,945.20x = 147,366,718.47
  5. Step 5: Solve for x
    x = 147,366,718.47/13,945.20
  6. Step 6: Final answer
    x = 10,567.56

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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.