Home / 38,617.56-53,293.20-21,621.72

Finding the Fourth Proportional to 38,617.56, 53,293.20 and 21,621.72

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Solution

The fourth proportional to 38,617.56, 53,293.20 and 21,621.72 is: 29,838.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,617.56 : 53,293.20 = 21,621.72 : x
  2. Step 2: Convert to fraction form
    38,617.56/53,293.20 = 21,621.72/x
  3. Step 3: Cross multiply
    38,617.56x = 53,293.20 × 21,621.72
  4. Step 4: Simplify right side
    38,617.56x = 1,152,290,648.30
  5. Step 5: Solve for x
    x = 1,152,290,648.30/38,617.56
  6. Step 6: Final answer
    x = 29,838.52

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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.