Home / 28,434.51-42,616.13-21,885.39

Finding the Fourth Proportional to 28,434.51, 42,616.13 and 21,885.39

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Solution

The fourth proportional to 28,434.51, 42,616.13 and 21,885.39 is: 32,800.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,434.51 : 42,616.13 = 21,885.39 : x
  2. Step 2: Convert to fraction form
    28,434.51/42,616.13 = 21,885.39/x
  3. Step 3: Cross multiply
    28,434.51x = 42,616.13 × 21,885.39
  4. Step 4: Simplify right side
    28,434.51x = 932,670,515.91
  5. Step 5: Solve for x
    x = 932,670,515.91/28,434.51
  6. Step 6: Final answer
    x = 32,800.65

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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.