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Finding the Fourth Proportional to 38,471.52, 53,093.37 and 21,479.11

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Solution

The fourth proportional to 38,471.52, 53,093.37 and 21,479.11 is: 29,642.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,471.52 : 53,093.37 = 21,479.11 : x
  2. Step 2: Convert to fraction form
    38,471.52/53,093.37 = 21,479.11/x
  3. Step 3: Cross multiply
    38,471.52x = 53,093.37 × 21,479.11
  4. Step 4: Simplify right side
    38,471.52x = 1,140,398,334.50
  5. Step 5: Solve for x
    x = 1,140,398,334.50/38,471.52
  6. Step 6: Final answer
    x = 29,642.66

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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.