Home / 13,631.16-20,448.90-4,395

Finding the Fourth Proportional to 13,631.16, 20,448.90 and 4,395

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Solution

The fourth proportional to 13,631.16, 20,448.90 and 4,395 is: 6,593.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.16 : 20,448.90 = 4,395 : x
  2. Step 2: Convert to fraction form
    13,631.16/20,448.90 = 4,395/x
  3. Step 3: Cross multiply
    13,631.16x = 20,448.90 × 4,395
  4. Step 4: Simplify right side
    13,631.16x = 89,872,915.50
  5. Step 5: Solve for x
    x = 89,872,915.50/13,631.16
  6. Step 6: Final answer
    x = 6,593.20

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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.