Home / 20,210.99-27,889.47-11,260.61

Finding the Fourth Proportional to 20,210.99, 27,889.47 and 11,260.61

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Solution

The fourth proportional to 20,210.99, 27,889.47 and 11,260.61 is: 15,538.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.99 : 27,889.47 = 11,260.61 : x
  2. Step 2: Convert to fraction form
    20,210.99/27,889.47 = 11,260.61/x
  3. Step 3: Cross multiply
    20,210.99x = 27,889.47 × 11,260.61
  4. Step 4: Simplify right side
    20,210.99x = 314,052,444.78
  5. Step 5: Solve for x
    x = 314,052,444.78/20,210.99
  6. Step 6: Final answer
    x = 15,538.70

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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.