Home / 28,223.20-38,948.45-15,477.55

Finding the Fourth Proportional to 28,223.20, 38,948.45 and 15,477.55

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Solution

The fourth proportional to 28,223.20, 38,948.45 and 15,477.55 is: 21,359.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,223.20 : 38,948.45 = 15,477.55 : x
  2. Step 2: Convert to fraction form
    28,223.20/38,948.45 = 15,477.55/x
  3. Step 3: Cross multiply
    28,223.20x = 38,948.45 × 15,477.55
  4. Step 4: Simplify right side
    28,223.20x = 602,826,407.54
  5. Step 5: Solve for x
    x = 602,826,407.54/28,223.20
  6. Step 6: Final answer
    x = 21,359.25

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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.