Home / 27,990.60-38,588.32-20,018.92

Finding the Fourth Proportional to 27,990.60, 38,588.32 and 20,018.92

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Solution

The fourth proportional to 27,990.60, 38,588.32 and 20,018.92 is: 27,598.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,990.60 : 38,588.32 = 20,018.92 : x
  2. Step 2: Convert to fraction form
    27,990.60/38,588.32 = 20,018.92/x
  3. Step 3: Cross multiply
    27,990.60x = 38,588.32 × 20,018.92
  4. Step 4: Simplify right side
    27,990.60x = 772,496,491.01
  5. Step 5: Solve for x
    x = 772,496,491.01/27,990.60
  6. Step 6: Final answer
    x = 27,598.43

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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.