Home / 13,423.74-20,131.50-6,400.05

Finding the Fourth Proportional to 13,423.74, 20,131.50 and 6,400.05

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Solution

The fourth proportional to 13,423.74, 20,131.50 and 6,400.05 is: 9,598.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,423.74 : 20,131.50 = 6,400.05 : x
  2. Step 2: Convert to fraction form
    13,423.74/20,131.50 = 6,400.05/x
  3. Step 3: Cross multiply
    13,423.74x = 20,131.50 × 6,400.05
  4. Step 4: Simplify right side
    13,423.74x = 128,842,606.58
  5. Step 5: Solve for x
    x = 128,842,606.58/13,423.74
  6. Step 6: Final answer
    x = 9,598.12

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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.