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Finding the Fourth Proportional to 37,681.66, 51,998.63 and 20,913.66

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Solution

The fourth proportional to 37,681.66, 51,998.63 and 20,913.66 is: 28,859.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,681.66 : 51,998.63 = 20,913.66 : x
  2. Step 2: Convert to fraction form
    37,681.66/51,998.63 = 20,913.66/x
  3. Step 3: Cross multiply
    37,681.66x = 51,998.63 × 20,913.66
  4. Step 4: Simplify right side
    37,681.66x = 1,087,481,668.29
  5. Step 5: Solve for x
    x = 1,087,481,668.29/37,681.66
  6. Step 6: Final answer
    x = 28,859.71

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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.