Home / 13,530.13-20,281.29-6,499.60

Finding the Fourth Proportional to 13,530.13, 20,281.29 and 6,499.60

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Solution

The fourth proportional to 13,530.13, 20,281.29 and 6,499.60 is: 9,742.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,530.13 : 20,281.29 = 6,499.60 : x
  2. Step 2: Convert to fraction form
    13,530.13/20,281.29 = 6,499.60/x
  3. Step 3: Cross multiply
    13,530.13x = 20,281.29 × 6,499.60
  4. Step 4: Simplify right side
    13,530.13x = 131,820,272.48
  5. Step 5: Solve for x
    x = 131,820,272.48/13,530.13
  6. Step 6: Final answer
    x = 9,742.72

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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.