Home / 13,680.24-20,487.69-7,000.31

Finding the Fourth Proportional to 13,680.24, 20,487.69 and 7,000.31

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Solution

The fourth proportional to 13,680.24, 20,487.69 and 7,000.31 is: 10,483.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,680.24 : 20,487.69 = 7,000.31 : x
  2. Step 2: Convert to fraction form
    13,680.24/20,487.69 = 7,000.31/x
  3. Step 3: Cross multiply
    13,680.24x = 20,487.69 × 7,000.31
  4. Step 4: Simplify right side
    13,680.24x = 143,420,078.75
  5. Step 5: Solve for x
    x = 143,420,078.75/13,680.24
  6. Step 6: Final answer
    x = 10,483.74

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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.