Home / 28,114.16-42,178.17-19,810.40

Finding the Fourth Proportional to 28,114.16, 42,178.17 and 19,810.40

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Solution

The fourth proportional to 28,114.16, 42,178.17 and 19,810.40 is: 29,720.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,114.16 : 42,178.17 = 19,810.40 : x
  2. Step 2: Convert to fraction form
    28,114.16/42,178.17 = 19,810.40/x
  3. Step 3: Cross multiply
    28,114.16x = 42,178.17 × 19,810.40
  4. Step 4: Simplify right side
    28,114.16x = 835,566,418.97
  5. Step 5: Solve for x
    x = 835,566,418.97/28,114.16
  6. Step 6: Final answer
    x = 29,720.48

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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.