Home / 15,207.18-20,986.35-8,492.70

Finding the Fourth Proportional to 15,207.18, 20,986.35 and 8,492.70

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Solution

The fourth proportional to 15,207.18, 20,986.35 and 8,492.70 is: 11,720.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,207.18 : 20,986.35 = 8,492.70 : x
  2. Step 2: Convert to fraction form
    15,207.18/20,986.35 = 8,492.70/x
  3. Step 3: Cross multiply
    15,207.18x = 20,986.35 × 8,492.70
  4. Step 4: Simplify right side
    15,207.18x = 178,230,774.65
  5. Step 5: Solve for x
    x = 178,230,774.65/15,207.18
  6. Step 6: Final answer
    x = 11,720.17

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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.