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Finding the Fourth Proportional to 15,014.88, 20,719.96 and 8,301.04

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Solution

The fourth proportional to 15,014.88, 20,719.96 and 8,301.04 is: 11,455.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,014.88 : 20,719.96 = 8,301.04 : x
  2. Step 2: Convert to fraction form
    15,014.88/20,719.96 = 8,301.04/x
  3. Step 3: Cross multiply
    15,014.88x = 20,719.96 × 8,301.04
  4. Step 4: Simplify right side
    15,014.88x = 171,997,216.76
  5. Step 5: Solve for x
    x = 171,997,216.76/15,014.88
  6. Step 6: Final answer
    x = 11,455.12

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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.