Home / 19,890.14-27,448.48-10,938.22

Finding the Fourth Proportional to 19,890.14, 27,448.48 and 10,938.22

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Solution

The fourth proportional to 19,890.14, 27,448.48 and 10,938.22 is: 15,094.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,890.14 : 27,448.48 = 10,938.22 : x
  2. Step 2: Convert to fraction form
    19,890.14/27,448.48 = 10,938.22/x
  3. Step 3: Cross multiply
    19,890.14x = 27,448.48 × 10,938.22
  4. Step 4: Simplify right side
    19,890.14x = 300,237,512.91
  5. Step 5: Solve for x
    x = 300,237,512.91/19,890.14
  6. Step 6: Final answer
    x = 15,094.79

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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.