Home / 20,109.20-30,196.20-13,564.40

Finding the Fourth Proportional to 20,109.20, 30,196.20 and 13,564.40

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Solution

The fourth proportional to 20,109.20, 30,196.20 and 13,564.40 is: 20,368.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,109.20 : 30,196.20 = 13,564.40 : x
  2. Step 2: Convert to fraction form
    20,109.20/30,196.20 = 13,564.40/x
  3. Step 3: Cross multiply
    20,109.20x = 30,196.20 × 13,564.40
  4. Step 4: Simplify right side
    20,109.20x = 409,593,335.28
  5. Step 5: Solve for x
    x = 409,593,335.28/20,109.20
  6. Step 6: Final answer
    x = 20,368.45

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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.