Home / 20,159.87-30,239.76-5,368.79

Finding the Fourth Proportional to 20,159.87, 30,239.76 and 5,368.79

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Solution

The fourth proportional to 20,159.87, 30,239.76 and 5,368.79 is: 8,053.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,159.87 : 30,239.76 = 5,368.79 : x
  2. Step 2: Convert to fraction form
    20,159.87/30,239.76 = 5,368.79/x
  3. Step 3: Cross multiply
    20,159.87x = 30,239.76 × 5,368.79
  4. Step 4: Simplify right side
    20,159.87x = 162,350,921.09
  5. Step 5: Solve for x
    x = 162,350,921.09/20,159.87
  6. Step 6: Final answer
    x = 8,053.17

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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.