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Finding the Fourth Proportional to 10,000.42, 15,004.95 and 5,611.30

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Solution

The fourth proportional to 10,000.42, 15,004.95 and 5,611.30 is: 8,419.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,000.42 : 15,004.95 = 5,611.30 : x
  2. Step 2: Convert to fraction form
    10,000.42/15,004.95 = 5,611.30/x
  3. Step 3: Cross multiply
    10,000.42x = 15,004.95 × 5,611.30
  4. Step 4: Simplify right side
    10,000.42x = 84,197,275.94
  5. Step 5: Solve for x
    x = 84,197,275.94/10,000.42
  6. Step 6: Final answer
    x = 8,419.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.