Home / 20,423.79-30,661.61-17,365.23

Finding the Fourth Proportional to 20,423.79, 30,661.61 and 17,365.23

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Solution

The fourth proportional to 20,423.79, 30,661.61 and 17,365.23 is: 26,069.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,423.79 : 30,661.61 = 17,365.23 : x
  2. Step 2: Convert to fraction form
    20,423.79/30,661.61 = 17,365.23/x
  3. Step 3: Cross multiply
    20,423.79x = 30,661.61 × 17,365.23
  4. Step 4: Simplify right side
    20,423.79x = 532,445,822.99
  5. Step 5: Solve for x
    x = 532,445,822.99/20,423.79
  6. Step 6: Final answer
    x = 26,069.88

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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.