Home / 43,138.80-64,707.12-13,552.56

Finding the Fourth Proportional to 43,138.80, 64,707.12 and 13,552.56

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Solution

The fourth proportional to 43,138.80, 64,707.12 and 13,552.56 is: 20,328.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,138.80 : 64,707.12 = 13,552.56 : x
  2. Step 2: Convert to fraction form
    43,138.80/64,707.12 = 13,552.56/x
  3. Step 3: Cross multiply
    43,138.80x = 64,707.12 × 13,552.56
  4. Step 4: Simplify right side
    43,138.80x = 876,947,126.23
  5. Step 5: Solve for x
    x = 876,947,126.23/43,138.80
  6. Step 6: Final answer
    x = 20,328.50

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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.