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Finding the Fourth Proportional to 37,646.48, 51,949.80 and 20,879.12

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Solution

The fourth proportional to 37,646.48, 51,949.80 and 20,879.12 is: 28,811.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,646.48 : 51,949.80 = 20,879.12 : x
  2. Step 2: Convert to fraction form
    37,646.48/51,949.80 = 20,879.12/x
  3. Step 3: Cross multiply
    37,646.48x = 51,949.80 × 20,879.12
  4. Step 4: Simplify right side
    37,646.48x = 1,084,666,108.18
  5. Step 5: Solve for x
    x = 1,084,666,108.18/37,646.48
  6. Step 6: Final answer
    x = 28,811.89

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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.