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Finding the Fourth Proportional to 15,014.46, 20,719.95 and 8,300.10

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Solution

The fourth proportional to 15,014.46, 20,719.95 and 8,300.10 is: 11,454.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,014.46 : 20,719.95 = 8,300.10 : x
  2. Step 2: Convert to fraction form
    15,014.46/20,719.95 = 8,300.10/x
  3. Step 3: Cross multiply
    15,014.46x = 20,719.95 × 8,300.10
  4. Step 4: Simplify right side
    15,014.46x = 171,977,657.00
  5. Step 5: Solve for x
    x = 171,977,657.00/15,014.46
  6. Step 6: Final answer
    x = 11,454.14

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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.