Home / 28,133.20-38,818.20-15,555.52

Finding the Fourth Proportional to 28,133.20, 38,818.20 and 15,555.52

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Solution

The fourth proportional to 28,133.20, 38,818.20 and 15,555.52 is: 21,463.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,133.20 : 38,818.20 = 15,555.52 : x
  2. Step 2: Convert to fraction form
    28,133.20/38,818.20 = 15,555.52/x
  3. Step 3: Cross multiply
    28,133.20x = 38,818.20 × 15,555.52
  4. Step 4: Simplify right side
    28,133.20x = 603,837,286.46
  5. Step 5: Solve for x
    x = 603,837,286.46/28,133.20
  6. Step 6: Final answer
    x = 21,463.51

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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.