Home / 20,557.43-30,811.32-10,011.65

Finding the Fourth Proportional to 20,557.43, 30,811.32 and 10,011.65

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Solution

The fourth proportional to 20,557.43, 30,811.32 and 10,011.65 is: 15,005.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,557.43 : 30,811.32 = 10,011.65 : x
  2. Step 2: Convert to fraction form
    20,557.43/30,811.32 = 10,011.65/x
  3. Step 3: Cross multiply
    20,557.43x = 30,811.32 × 10,011.65
  4. Step 4: Simplify right side
    20,557.43x = 308,472,191.36
  5. Step 5: Solve for x
    x = 308,472,191.36/20,557.43
  6. Step 6: Final answer
    x = 15,005.39

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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.