Home / 20,012.50-27,585.45-15,756.82

Finding the Fourth Proportional to 20,012.50, 27,585.45 and 15,756.82

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Solution

The fourth proportional to 20,012.50, 27,585.45 and 15,756.82 is: 21,719.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,012.50 : 27,585.45 = 15,756.82 : x
  2. Step 2: Convert to fraction form
    20,012.50/27,585.45 = 15,756.82/x
  3. Step 3: Cross multiply
    20,012.50x = 27,585.45 × 15,756.82
  4. Step 4: Simplify right side
    20,012.50x = 434,658,970.27
  5. Step 5: Solve for x
    x = 434,658,970.27/20,012.50
  6. Step 6: Final answer
    x = 21,719.37

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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.