Home / 13,560.90-20,341.35-8,910.30

Finding the Fourth Proportional to 13,560.90, 20,341.35 and 8,910.30

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Solution

The fourth proportional to 13,560.90, 20,341.35 and 8,910.30 is: 13,365.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,560.90 : 20,341.35 = 8,910.30 : x
  2. Step 2: Convert to fraction form
    13,560.90/20,341.35 = 8,910.30/x
  3. Step 3: Cross multiply
    13,560.90x = 20,341.35 × 8,910.30
  4. Step 4: Simplify right side
    13,560.90x = 181,247,530.91
  5. Step 5: Solve for x
    x = 181,247,530.91/13,560.90
  6. Step 6: Final answer
    x = 13,365.45

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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.