Home / 28,791.90-43,184.61-21,407.40

Finding the Fourth Proportional to 28,791.90, 43,184.61 and 21,407.40

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Solution

The fourth proportional to 28,791.90, 43,184.61 and 21,407.40 is: 32,108.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,791.90 : 43,184.61 = 21,407.40 : x
  2. Step 2: Convert to fraction form
    28,791.90/43,184.61 = 21,407.40/x
  3. Step 3: Cross multiply
    28,791.90x = 43,184.61 × 21,407.40
  4. Step 4: Simplify right side
    28,791.90x = 924,470,220.11
  5. Step 5: Solve for x
    x = 924,470,220.11/28,791.90
  6. Step 6: Final answer
    x = 32,108.69

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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.