Home / 27,835.86-38,382.56-21,448.20

Finding the Fourth Proportional to 27,835.86, 38,382.56 and 21,448.20

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Solution

The fourth proportional to 27,835.86, 38,382.56 and 21,448.20 is: 29,574.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,835.86 : 38,382.56 = 21,448.20 : x
  2. Step 2: Convert to fraction form
    27,835.86/38,382.56 = 21,448.20/x
  3. Step 3: Cross multiply
    27,835.86x = 38,382.56 × 21,448.20
  4. Step 4: Simplify right side
    27,835.86x = 823,236,823.39
  5. Step 5: Solve for x
    x = 823,236,823.39/27,835.86
  6. Step 6: Final answer
    x = 29,574.69

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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.