Home / 18,859.09-28,292.28-7,171.40

Finding the Fourth Proportional to 18,859.09, 28,292.28 and 7,171.40

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Solution

The fourth proportional to 18,859.09, 28,292.28 and 7,171.40 is: 10,758.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,859.09 : 28,292.28 = 7,171.40 : x
  2. Step 2: Convert to fraction form
    18,859.09/28,292.28 = 7,171.40/x
  3. Step 3: Cross multiply
    18,859.09x = 28,292.28 × 7,171.40
  4. Step 4: Simplify right side
    18,859.09x = 202,895,256.79
  5. Step 5: Solve for x
    x = 202,895,256.79/18,859.09
  6. Step 6: Final answer
    x = 10,758.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.