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Finding the Fourth Proportional to 28,170.99, 42,256.49 and 22,899.71

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Solution

The fourth proportional to 28,170.99, 42,256.49 and 22,899.71 is: 34,349.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,170.99 : 42,256.49 = 22,899.71 : x
  2. Step 2: Convert to fraction form
    28,170.99/42,256.49 = 22,899.71/x
  3. Step 3: Cross multiply
    28,170.99x = 42,256.49 × 22,899.71
  4. Step 4: Simplify right side
    28,170.99x = 967,661,357.76
  5. Step 5: Solve for x
    x = 967,661,357.76/28,170.99
  6. Step 6: Final answer
    x = 34,349.57

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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.