Home / 28,219.50-38,943.18-15,644.52

Finding the Fourth Proportional to 28,219.50, 38,943.18 and 15,644.52

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Solution

The fourth proportional to 28,219.50, 38,943.18 and 15,644.52 is: 21,589.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,219.50 : 38,943.18 = 15,644.52 : x
  2. Step 2: Convert to fraction form
    28,219.50/38,943.18 = 15,644.52/x
  3. Step 3: Cross multiply
    28,219.50x = 38,943.18 × 15,644.52
  4. Step 4: Simplify right side
    28,219.50x = 609,247,358.37
  5. Step 5: Solve for x
    x = 609,247,358.37/28,219.50
  6. Step 6: Final answer
    x = 21,589.59

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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.