Home / 20,178.79-27,846.63-11,225.77

Finding the Fourth Proportional to 20,178.79, 27,846.63 and 11,225.77

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Solution

The fourth proportional to 20,178.79, 27,846.63 and 11,225.77 is: 15,491.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178.79 : 27,846.63 = 11,225.77 : x
  2. Step 2: Convert to fraction form
    20,178.79/27,846.63 = 11,225.77/x
  3. Step 3: Cross multiply
    20,178.79x = 27,846.63 × 11,225.77
  4. Step 4: Simplify right side
    20,178.79x = 312,599,794.04
  5. Step 5: Solve for x
    x = 312,599,794.04/20,178.79
  6. Step 6: Final answer
    x = 15,491.51

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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.