Home / 19,809.40-27,344.10-13,517.32

Finding the Fourth Proportional to 19,809.40, 27,344.10 and 13,517.32

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Solution

The fourth proportional to 19,809.40, 27,344.10 and 13,517.32 is: 18,658.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,809.40 : 27,344.10 = 13,517.32 : x
  2. Step 2: Convert to fraction form
    19,809.40/27,344.10 = 13,517.32/x
  3. Step 3: Cross multiply
    19,809.40x = 27,344.10 × 13,517.32
  4. Step 4: Simplify right side
    19,809.40x = 369,618,949.81
  5. Step 5: Solve for x
    x = 369,618,949.81/19,809.40
  6. Step 6: Final answer
    x = 18,658.77

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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.