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Finding the Fourth Proportional to 35,397.84, 53,120.88 and 14,621.20

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Solution

The fourth proportional to 35,397.84, 53,120.88 and 14,621.20 is: 21,941.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,397.84 : 53,120.88 = 14,621.20 : x
  2. Step 2: Convert to fraction form
    35,397.84/53,120.88 = 14,621.20/x
  3. Step 3: Cross multiply
    35,397.84x = 53,120.88 × 14,621.20
  4. Step 4: Simplify right side
    35,397.84x = 776,691,010.66
  5. Step 5: Solve for x
    x = 776,691,010.66/35,397.84
  6. Step 6: Final answer
    x = 21,941.76

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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.