Home / 13,159.80-18,158.52-7,854.54

Finding the Fourth Proportional to 13,159.80, 18,158.52 and 7,854.54

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Solution

The fourth proportional to 13,159.80, 18,158.52 and 7,854.54 is: 10,838.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,159.80 : 18,158.52 = 7,854.54 : x
  2. Step 2: Convert to fraction form
    13,159.80/18,158.52 = 7,854.54/x
  3. Step 3: Cross multiply
    13,159.80x = 18,158.52 × 7,854.54
  4. Step 4: Simplify right side
    13,159.80x = 142,626,821.68
  5. Step 5: Solve for x
    x = 142,626,821.68/13,159.80
  6. Step 6: Final answer
    x = 10,838.07

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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.