Home / 13,671.72-20,507.55-10,556.28

Finding the Fourth Proportional to 13,671.72, 20,507.55 and 10,556.28

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Solution

The fourth proportional to 13,671.72, 20,507.55 and 10,556.28 is: 15,834.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,671.72 : 20,507.55 = 10,556.28 : x
  2. Step 2: Convert to fraction form
    13,671.72/20,507.55 = 10,556.28/x
  3. Step 3: Cross multiply
    13,671.72x = 20,507.55 × 10,556.28
  4. Step 4: Simplify right side
    13,671.72x = 216,483,439.91
  5. Step 5: Solve for x
    x = 216,483,439.91/13,671.72
  6. Step 6: Final answer
    x = 15,834.40

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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.