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Finding the Fourth Proportional to 35,454.40, 53,188.80 and 12,083.20

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Solution

The fourth proportional to 35,454.40, 53,188.80 and 12,083.20 is: 18,127.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,454.40 : 53,188.80 = 12,083.20 : x
  2. Step 2: Convert to fraction form
    35,454.40/53,188.80 = 12,083.20/x
  3. Step 3: Cross multiply
    35,454.40x = 53,188.80 × 12,083.20
  4. Step 4: Simplify right side
    35,454.40x = 642,690,908.16
  5. Step 5: Solve for x
    x = 642,690,908.16/35,454.40
  6. Step 6: Final answer
    x = 18,127.25

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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.