Home / 29,615.52-40,859.20-18,436.80

Finding the Fourth Proportional to 29,615.52, 40,859.20 and 18,436.80

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Solution

The fourth proportional to 29,615.52, 40,859.20 and 18,436.80 is: 25,436.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,615.52 : 40,859.20 = 18,436.80 : x
  2. Step 2: Convert to fraction form
    29,615.52/40,859.20 = 18,436.80/x
  3. Step 3: Cross multiply
    29,615.52x = 40,859.20 × 18,436.80
  4. Step 4: Simplify right side
    29,615.52x = 753,312,898.56
  5. Step 5: Solve for x
    x = 753,312,898.56/29,615.52
  6. Step 6: Final answer
    x = 25,436.42

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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.