Home / 38,672.90-53,356.61-21,674.78

Finding the Fourth Proportional to 38,672.90, 53,356.61 and 21,674.78

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Solution

The fourth proportional to 38,672.90, 53,356.61 and 21,674.78 is: 29,904.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,672.90 : 53,356.61 = 21,674.78 : x
  2. Step 2: Convert to fraction form
    38,672.90/53,356.61 = 21,674.78/x
  3. Step 3: Cross multiply
    38,672.90x = 53,356.61 × 21,674.78
  4. Step 4: Simplify right side
    38,672.90x = 1,156,492,770.79
  5. Step 5: Solve for x
    x = 1,156,492,770.79/38,672.90
  6. Step 6: Final answer
    x = 29,904.48

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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.