Home / 38,387.78-52,976.77-21,392.05

Finding the Fourth Proportional to 38,387.78, 52,976.77 and 21,392.05

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Solution

The fourth proportional to 38,387.78, 52,976.77 and 21,392.05 is: 29,521.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,387.78 : 52,976.77 = 21,392.05 : x
  2. Step 2: Convert to fraction form
    38,387.78/52,976.77 = 21,392.05/x
  3. Step 3: Cross multiply
    38,387.78x = 52,976.77 × 21,392.05
  4. Step 4: Simplify right side
    38,387.78x = 1,133,281,340.83
  5. Step 5: Solve for x
    x = 1,133,281,340.83/38,387.78
  6. Step 6: Final answer
    x = 29,521.93

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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.