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Finding the Fourth Proportional to 15,004.04, 20,704.02 and 8,715.20

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Solution

The fourth proportional to 15,004.04, 20,704.02 and 8,715.20 is: 12,026.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,004.04 : 20,704.02 = 8,715.20 : x
  2. Step 2: Convert to fraction form
    15,004.04/20,704.02 = 8,715.20/x
  3. Step 3: Cross multiply
    15,004.04x = 20,704.02 × 8,715.20
  4. Step 4: Simplify right side
    15,004.04x = 180,439,675.10
  5. Step 5: Solve for x
    x = 180,439,675.10/15,004.04
  6. Step 6: Final answer
    x = 12,026.07

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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.