Home / 38,651.50-53,339.13-21,887.74

Finding the Fourth Proportional to 38,651.50, 53,339.13 and 21,887.74

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Solution

The fourth proportional to 38,651.50, 53,339.13 and 21,887.74 is: 30,205.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,651.50 : 53,339.13 = 21,887.74 : x
  2. Step 2: Convert to fraction form
    38,651.50/53,339.13 = 21,887.74/x
  3. Step 3: Cross multiply
    38,651.50x = 53,339.13 × 21,887.74
  4. Step 4: Simplify right side
    38,651.50x = 1,167,473,009.27
  5. Step 5: Solve for x
    x = 1,167,473,009.27/38,651.50
  6. Step 6: Final answer
    x = 30,205.12

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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.