Home / 13,421.58-20,129.58-6,756.24

Finding the Fourth Proportional to 13,421.58, 20,129.58 and 6,756.24

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Solution

The fourth proportional to 13,421.58, 20,129.58 and 6,756.24 is: 10,132.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.58 : 20,129.58 = 6,756.24 : x
  2. Step 2: Convert to fraction form
    13,421.58/20,129.58 = 6,756.24/x
  3. Step 3: Cross multiply
    13,421.58x = 20,129.58 × 6,756.24
  4. Step 4: Simplify right side
    13,421.58x = 136,000,273.58
  5. Step 5: Solve for x
    x = 136,000,273.58/13,421.58
  6. Step 6: Final answer
    x = 10,132.96

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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.