Home / 29,240.50-40,351.84-15,811.72

Finding the Fourth Proportional to 29,240.50, 40,351.84 and 15,811.72

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Solution

The fourth proportional to 29,240.50, 40,351.84 and 15,811.72 is: 21,820.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,240.50 : 40,351.84 = 15,811.72 : x
  2. Step 2: Convert to fraction form
    29,240.50/40,351.84 = 15,811.72/x
  3. Step 3: Cross multiply
    29,240.50x = 40,351.84 × 15,811.72
  4. Step 4: Simplify right side
    29,240.50x = 638,031,995.56
  5. Step 5: Solve for x
    x = 638,031,995.56/29,240.50
  6. Step 6: Final answer
    x = 21,820.15

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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.