Home / 20,842.58-31,251.51-8,368.52

Finding the Fourth Proportional to 20,842.58, 31,251.51 and 8,368.52

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Solution

The fourth proportional to 20,842.58, 31,251.51 and 8,368.52 is: 12,547.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,842.58 : 31,251.51 = 8,368.52 : x
  2. Step 2: Convert to fraction form
    20,842.58/31,251.51 = 8,368.52/x
  3. Step 3: Cross multiply
    20,842.58x = 31,251.51 × 8,368.52
  4. Step 4: Simplify right side
    20,842.58x = 261,528,886.47
  5. Step 5: Solve for x
    x = 261,528,886.47/20,842.58
  6. Step 6: Final answer
    x = 12,547.82

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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.