Home / 18,956.09-28,434.80-7,108.66

Finding the Fourth Proportional to 18,956.09, 28,434.80 and 7,108.66

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Solution

The fourth proportional to 18,956.09, 28,434.80 and 7,108.66 is: 10,663.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,956.09 : 28,434.80 = 7,108.66 : x
  2. Step 2: Convert to fraction form
    18,956.09/28,434.80 = 7,108.66/x
  3. Step 3: Cross multiply
    18,956.09x = 28,434.80 × 7,108.66
  4. Step 4: Simplify right side
    18,956.09x = 202,133,147.65
  5. Step 5: Solve for x
    x = 202,133,147.65/18,956.09
  6. Step 6: Final answer
    x = 10,663.23

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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.