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Finding the Fourth Proportional to 28,343.99, 39,115.71 and 16,246.71

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Solution

The fourth proportional to 28,343.99, 39,115.71 and 16,246.71 is: 22,421.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,343.99 : 39,115.71 = 16,246.71 : x
  2. Step 2: Convert to fraction form
    28,343.99/39,115.71 = 16,246.71/x
  3. Step 3: Cross multiply
    28,343.99x = 39,115.71 × 16,246.71
  4. Step 4: Simplify right side
    28,343.99x = 635,501,596.81
  5. Step 5: Solve for x
    x = 635,501,596.81/28,343.99
  6. Step 6: Final answer
    x = 22,421.03

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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.