Home / 13,955.24-21,015.40-10,086.68

Finding the Fourth Proportional to 13,955.24, 21,015.40 and 10,086.68

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Solution

The fourth proportional to 13,955.24, 21,015.40 and 10,086.68 is: 15,189.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,955.24 : 21,015.40 = 10,086.68 : x
  2. Step 2: Convert to fraction form
    13,955.24/21,015.40 = 10,086.68/x
  3. Step 3: Cross multiply
    13,955.24x = 21,015.40 × 10,086.68
  4. Step 4: Simplify right side
    13,955.24x = 211,975,614.87
  5. Step 5: Solve for x
    x = 211,975,614.87/13,955.24
  6. Step 6: Final answer
    x = 15,189.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.