Home / 19,917.81-27,487.56-10,965.21

Finding the Fourth Proportional to 19,917.81, 27,487.56 and 10,965.21

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Solution

The fourth proportional to 19,917.81, 27,487.56 and 10,965.21 is: 15,132.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,917.81 : 27,487.56 = 10,965.21 : x
  2. Step 2: Convert to fraction form
    19,917.81/27,487.56 = 10,965.21/x
  3. Step 3: Cross multiply
    19,917.81x = 27,487.56 × 10,965.21
  4. Step 4: Simplify right side
    19,917.81x = 301,406,867.79
  5. Step 5: Solve for x
    x = 301,406,867.79/19,917.81
  6. Step 6: Final answer
    x = 15,132.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.