Home / 19,276.12-28,918.13-8,182.76

Finding the Fourth Proportional to 19,276.12, 28,918.13 and 8,182.76

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Solution

The fourth proportional to 19,276.12, 28,918.13 and 8,182.76 is: 12,275.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,276.12 : 28,918.13 = 8,182.76 : x
  2. Step 2: Convert to fraction form
    19,276.12/28,918.13 = 8,182.76/x
  3. Step 3: Cross multiply
    19,276.12x = 28,918.13 × 8,182.76
  4. Step 4: Simplify right side
    19,276.12x = 236,630,148.82
  5. Step 5: Solve for x
    x = 236,630,148.82/19,276.12
  6. Step 6: Final answer
    x = 12,275.82

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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.