Home / 15,042.12-20,758.47-8,328.03

Finding the Fourth Proportional to 15,042.12, 20,758.47 and 8,328.03

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Solution

The fourth proportional to 15,042.12, 20,758.47 and 8,328.03 is: 11,492.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,042.12 : 20,758.47 = 8,328.03 : x
  2. Step 2: Convert to fraction form
    15,042.12/20,758.47 = 8,328.03/x
  3. Step 3: Cross multiply
    15,042.12x = 20,758.47 × 8,328.03
  4. Step 4: Simplify right side
    15,042.12x = 172,877,015.48
  5. Step 5: Solve for x
    x = 172,877,015.48/15,042.12
  6. Step 6: Final answer
    x = 11,492.87

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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.