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Finding the Fourth Proportional to 15,014.69, 20,720.03 and 8,300.16

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Solution

The fourth proportional to 15,014.69, 20,720.03 and 8,300.16 is: 11,454.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,014.69 : 20,720.03 = 8,300.16 : x
  2. Step 2: Convert to fraction form
    15,014.69/20,720.03 = 8,300.16/x
  3. Step 3: Cross multiply
    15,014.69x = 20,720.03 × 8,300.16
  4. Step 4: Simplify right side
    15,014.69x = 171,979,522.70
  5. Step 5: Solve for x
    x = 171,979,522.70/15,014.69
  6. Step 6: Final answer
    x = 11,454.09

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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.