Home / 13,590.29-20,352.51-6,909.21

Finding the Fourth Proportional to 13,590.29, 20,352.51 and 6,909.21

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Solution

The fourth proportional to 13,590.29, 20,352.51 and 6,909.21 is: 10,347.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,590.29 : 20,352.51 = 6,909.21 : x
  2. Step 2: Convert to fraction form
    13,590.29/20,352.51 = 6,909.21/x
  3. Step 3: Cross multiply
    13,590.29x = 20,352.51 × 6,909.21
  4. Step 4: Simplify right side
    13,590.29x = 140,619,765.62
  5. Step 5: Solve for x
    x = 140,619,765.62/13,590.29
  6. Step 6: Final answer
    x = 10,347.08

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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.