Home / 19,890.22-27,448.70-10,937.78

Finding the Fourth Proportional to 19,890.22, 27,448.70 and 10,937.78

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Solution

The fourth proportional to 19,890.22, 27,448.70 and 10,937.78 is: 15,094.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,890.22 : 27,448.70 = 10,937.78 : x
  2. Step 2: Convert to fraction form
    19,890.22/27,448.70 = 10,937.78/x
  3. Step 3: Cross multiply
    19,890.22x = 27,448.70 × 10,937.78
  4. Step 4: Simplify right side
    19,890.22x = 300,227,855.82
  5. Step 5: Solve for x
    x = 300,227,855.82/19,890.22
  6. Step 6: Final answer
    x = 15,094.25

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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.