Home / 13,439.15-20,153.53-4,431.10

Finding the Fourth Proportional to 13,439.15, 20,153.53 and 4,431.10

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Solution

The fourth proportional to 13,439.15, 20,153.53 and 4,431.10 is: 6,644.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,439.15 : 20,153.53 = 4,431.10 : x
  2. Step 2: Convert to fraction form
    13,439.15/20,153.53 = 4,431.10/x
  3. Step 3: Cross multiply
    13,439.15x = 20,153.53 × 4,431.10
  4. Step 4: Simplify right side
    13,439.15x = 89,302,306.78
  5. Step 5: Solve for x
    x = 89,302,306.78/13,439.15
  6. Step 6: Final answer
    x = 6,644.94

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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.