Home / 13,387.68-20,081.32-4,153.68

Finding the Fourth Proportional to 13,387.68, 20,081.32 and 4,153.68

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Solution

The fourth proportional to 13,387.68, 20,081.32 and 4,153.68 is: 6,230.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,387.68 : 20,081.32 = 4,153.68 : x
  2. Step 2: Convert to fraction form
    13,387.68/20,081.32 = 4,153.68/x
  3. Step 3: Cross multiply
    13,387.68x = 20,081.32 × 4,153.68
  4. Step 4: Simplify right side
    13,387.68x = 83,411,377.26
  5. Step 5: Solve for x
    x = 83,411,377.26/13,387.68
  6. Step 6: Final answer
    x = 6,230.46

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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.