Home / 13,933.48-20,879.70-10,218.40

Finding the Fourth Proportional to 13,933.48, 20,879.70 and 10,218.40

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Solution

The fourth proportional to 13,933.48, 20,879.70 and 10,218.40 is: 15,312.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,933.48 : 20,879.70 = 10,218.40 : x
  2. Step 2: Convert to fraction form
    13,933.48/20,879.70 = 10,218.40/x
  3. Step 3: Cross multiply
    13,933.48x = 20,879.70 × 10,218.40
  4. Step 4: Simplify right side
    13,933.48x = 213,357,126.48
  5. Step 5: Solve for x
    x = 213,357,126.48/13,933.48
  6. Step 6: Final answer
    x = 15,312.55

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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.