Home / 20,209.10-30,320.94-10,353.02

Finding the Fourth Proportional to 20,209.10, 30,320.94 and 10,353.02

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Solution

The fourth proportional to 20,209.10, 30,320.94 and 10,353.02 is: 15,533.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,209.10 : 30,320.94 = 10,353.02 : x
  2. Step 2: Convert to fraction form
    20,209.10/30,320.94 = 10,353.02/x
  3. Step 3: Cross multiply
    20,209.10x = 30,320.94 × 10,353.02
  4. Step 4: Simplify right side
    20,209.10x = 313,913,298.24
  5. Step 5: Solve for x
    x = 313,913,298.24/20,209.10
  6. Step 6: Final answer
    x = 15,533.26

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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.