Home / 28,582.03-42,938.75-20,167.90

Finding the Fourth Proportional to 28,582.03, 42,938.75 and 20,167.90

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Solution

The fourth proportional to 28,582.03, 42,938.75 and 20,167.90 is: 30,298.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,582.03 : 42,938.75 = 20,167.90 : x
  2. Step 2: Convert to fraction form
    28,582.03/42,938.75 = 20,167.90/x
  3. Step 3: Cross multiply
    28,582.03x = 42,938.75 × 20,167.90
  4. Step 4: Simplify right side
    28,582.03x = 865,984,416.13
  5. Step 5: Solve for x
    x = 865,984,416.13/28,582.03
  6. Step 6: Final answer
    x = 30,298.21

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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.