Home / 19,816.40-27,328.92-13,108.88

Finding the Fourth Proportional to 19,816.40, 27,328.92 and 13,108.88

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Solution

The fourth proportional to 19,816.40, 27,328.92 and 13,108.88 is: 18,078.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,816.40 : 27,328.92 = 13,108.88 : x
  2. Step 2: Convert to fraction form
    19,816.40/27,328.92 = 13,108.88/x
  3. Step 3: Cross multiply
    19,816.40x = 27,328.92 × 13,108.88
  4. Step 4: Simplify right side
    19,816.40x = 358,251,532.81
  5. Step 5: Solve for x
    x = 358,251,532.81/19,816.40
  6. Step 6: Final answer
    x = 18,078.54

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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.