Home / 13,506.20-18,639.50-7,539.04

Finding the Fourth Proportional to 13,506.20, 18,639.50 and 7,539.04

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Solution

The fourth proportional to 13,506.20, 18,639.50 and 7,539.04 is: 10,404.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,506.20 : 18,639.50 = 7,539.04 : x
  2. Step 2: Convert to fraction form
    13,506.20/18,639.50 = 7,539.04/x
  3. Step 3: Cross multiply
    13,506.20x = 18,639.50 × 7,539.04
  4. Step 4: Simplify right side
    13,506.20x = 140,523,851.79
  5. Step 5: Solve for x
    x = 140,523,851.79/13,506.20
  6. Step 6: Final answer
    x = 10,404.39

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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.