Home / 19,689.57-27,176.45-15,206.49

Finding the Fourth Proportional to 19,689.57, 27,176.45 and 15,206.49

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Solution

The fourth proportional to 19,689.57, 27,176.45 and 15,206.49 is: 20,988.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,689.57 : 27,176.45 = 15,206.49 : x
  2. Step 2: Convert to fraction form
    19,689.57/27,176.45 = 15,206.49/x
  3. Step 3: Cross multiply
    19,689.57x = 27,176.45 × 15,206.49
  4. Step 4: Simplify right side
    19,689.57x = 413,258,339.13
  5. Step 5: Solve for x
    x = 413,258,339.13/19,689.57
  6. Step 6: Final answer
    x = 20,988.69

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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.