Home / 38,780.32-58,187.76-20,308

Finding the Fourth Proportional to 38,780.32, 58,187.76 and 20,308

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Solution

The fourth proportional to 38,780.32, 58,187.76 and 20,308 is: 30,471.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,780.32 : 58,187.76 = 20,308 : x
  2. Step 2: Convert to fraction form
    38,780.32/58,187.76 = 20,308/x
  3. Step 3: Cross multiply
    38,780.32x = 58,187.76 × 20,308
  4. Step 4: Simplify right side
    38,780.32x = 1,181,677,030.08
  5. Step 5: Solve for x
    x = 1,181,677,030.08/38,780.32
  6. Step 6: Final answer
    x = 30,471.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.