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Finding the Fourth Proportional to 15,017.98, 20,724.50 and 8,303.90

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Solution

The fourth proportional to 15,017.98, 20,724.50 and 8,303.90 is: 11,459.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,017.98 : 20,724.50 = 8,303.90 : x
  2. Step 2: Convert to fraction form
    15,017.98/20,724.50 = 8,303.90/x
  3. Step 3: Cross multiply
    15,017.98x = 20,724.50 × 8,303.90
  4. Step 4: Simplify right side
    15,017.98x = 172,094,175.55
  5. Step 5: Solve for x
    x = 172,094,175.55/15,017.98
  6. Step 6: Final answer
    x = 11,459.21

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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.