Home / 19,890.20-27,448.10-10,937.62

Finding the Fourth Proportional to 19,890.20, 27,448.10 and 10,937.62

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Solution

The fourth proportional to 19,890.20, 27,448.10 and 10,937.62 is: 15,093.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,890.20 : 27,448.10 = 10,937.62 : x
  2. Step 2: Convert to fraction form
    19,890.20/27,448.10 = 10,937.62/x
  3. Step 3: Cross multiply
    19,890.20x = 27,448.10 × 10,937.62
  4. Step 4: Simplify right side
    19,890.20x = 300,216,887.52
  5. Step 5: Solve for x
    x = 300,216,887.52/19,890.20
  6. Step 6: Final answer
    x = 15,093.71

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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.