Home / 15,002.12-20,706.36-8,715.44

Finding the Fourth Proportional to 15,002.12, 20,706.36 and 8,715.44

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Solution

The fourth proportional to 15,002.12, 20,706.36 and 8,715.44 is: 12,029.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,002.12 : 20,706.36 = 8,715.44 : x
  2. Step 2: Convert to fraction form
    15,002.12/20,706.36 = 8,715.44/x
  3. Step 3: Cross multiply
    15,002.12x = 20,706.36 × 8,715.44
  4. Step 4: Simplify right side
    15,002.12x = 180,465,038.20
  5. Step 5: Solve for x
    x = 180,465,038.20/15,002.12
  6. Step 6: Final answer
    x = 12,029.30

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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.