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Finding the Fourth Proportional to 35,276.40, 52,921.80 and 11,905.20

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Solution

The fourth proportional to 35,276.40, 52,921.80 and 11,905.20 is: 17,860.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,276.40 : 52,921.80 = 11,905.20 : x
  2. Step 2: Convert to fraction form
    35,276.40/52,921.80 = 11,905.20/x
  3. Step 3: Cross multiply
    35,276.40x = 52,921.80 × 11,905.20
  4. Step 4: Simplify right side
    35,276.40x = 630,044,613.36
  5. Step 5: Solve for x
    x = 630,044,613.36/35,276.40
  6. Step 6: Final answer
    x = 17,860.23

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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.