Home / 13,530.87-20,291.45-5,206.64

Finding the Fourth Proportional to 13,530.87, 20,291.45 and 5,206.64

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Solution

The fourth proportional to 13,530.87, 20,291.45 and 5,206.64 is: 7,808.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,530.87 : 20,291.45 = 5,206.64 : x
  2. Step 2: Convert to fraction form
    13,530.87/20,291.45 = 5,206.64/x
  3. Step 3: Cross multiply
    13,530.87x = 20,291.45 × 5,206.64
  4. Step 4: Simplify right side
    13,530.87x = 105,650,147.74
  5. Step 5: Solve for x
    x = 105,650,147.74/13,530.87
  6. Step 6: Final answer
    x = 7,808.08

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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.