Home / 18,953.07-28,434.75-5,805.15

Finding the Fourth Proportional to 18,953.07, 28,434.75 and 5,805.15

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Solution

The fourth proportional to 18,953.07, 28,434.75 and 5,805.15 is: 8,709.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,953.07 : 28,434.75 = 5,805.15 : x
  2. Step 2: Convert to fraction form
    18,953.07/28,434.75 = 5,805.15/x
  3. Step 3: Cross multiply
    18,953.07x = 28,434.75 × 5,805.15
  4. Step 4: Simplify right side
    18,953.07x = 165,067,988.96
  5. Step 5: Solve for x
    x = 165,067,988.96/18,953.07
  6. Step 6: Final answer
    x = 8,709.30

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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.