Home / 19,880.48-27,434.64-12,806.96

Finding the Fourth Proportional to 19,880.48, 27,434.64 and 12,806.96

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Solution

The fourth proportional to 19,880.48, 27,434.64 and 12,806.96 is: 17,673.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,880.48 : 27,434.64 = 12,806.96 : x
  2. Step 2: Convert to fraction form
    19,880.48/27,434.64 = 12,806.96/x
  3. Step 3: Cross multiply
    19,880.48x = 27,434.64 × 12,806.96
  4. Step 4: Simplify right side
    19,880.48x = 351,354,337.09
  5. Step 5: Solve for x
    x = 351,354,337.09/19,880.48
  6. Step 6: Final answer
    x = 17,673.33

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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.