Home / 15,486.08-21,370.86-9,112.91

Finding the Fourth Proportional to 15,486.08, 21,370.86 and 9,112.91

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Solution

The fourth proportional to 15,486.08, 21,370.86 and 9,112.91 is: 12,575.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,486.08 : 21,370.86 = 9,112.91 : x
  2. Step 2: Convert to fraction form
    15,486.08/21,370.86 = 9,112.91/x
  3. Step 3: Cross multiply
    15,486.08x = 21,370.86 × 9,112.91
  4. Step 4: Simplify right side
    15,486.08x = 194,750,616.95
  5. Step 5: Solve for x
    x = 194,750,616.95/15,486.08
  6. Step 6: Final answer
    x = 12,575.85

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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.