Home / 28,239.84-42,346.08-8,514.72

Finding the Fourth Proportional to 28,239.84, 42,346.08 and 8,514.72

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Solution

The fourth proportional to 28,239.84, 42,346.08 and 8,514.72 is: 12,767.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,239.84 : 42,346.08 = 8,514.72 : x
  2. Step 2: Convert to fraction form
    28,239.84/42,346.08 = 8,514.72/x
  3. Step 3: Cross multiply
    28,239.84x = 42,346.08 × 8,514.72
  4. Step 4: Simplify right side
    28,239.84x = 360,564,971.72
  5. Step 5: Solve for x
    x = 360,564,971.72/28,239.84
  6. Step 6: Final answer
    x = 12,767.95

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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.