Home / 20,420.79-30,657.11-17,362.23

Finding the Fourth Proportional to 20,420.79, 30,657.11 and 17,362.23

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Solution

The fourth proportional to 20,420.79, 30,657.11 and 17,362.23 is: 26,065.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,420.79 : 30,657.11 = 17,362.23 : x
  2. Step 2: Convert to fraction form
    20,420.79/30,657.11 = 17,362.23/x
  3. Step 3: Cross multiply
    20,420.79x = 30,657.11 × 17,362.23
  4. Step 4: Simplify right side
    20,420.79x = 532,275,708.14
  5. Step 5: Solve for x
    x = 532,275,708.14/20,420.79
  6. Step 6: Final answer
    x = 26,065.38

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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.