Home / 43,139.14-64,708.69-19,765.57

Finding the Fourth Proportional to 43,139.14, 64,708.69 and 19,765.57

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Solution

The fourth proportional to 43,139.14, 64,708.69 and 19,765.57 is: 29,648.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,139.14 : 64,708.69 = 19,765.57 : x
  2. Step 2: Convert to fraction form
    43,139.14/64,708.69 = 19,765.57/x
  3. Step 3: Cross multiply
    43,139.14x = 64,708.69 × 19,765.57
  4. Step 4: Simplify right side
    43,139.14x = 1,279,004,141.80
  5. Step 5: Solve for x
    x = 1,279,004,141.80/43,139.14
  6. Step 6: Final answer
    x = 29,648.35

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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.