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Finding the Fourth Proportional to 35,130.80, 48,481.20 and 19,215.20

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Solution

The fourth proportional to 35,130.80, 48,481.20 and 19,215.20 is: 26,517.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,130.80 : 48,481.20 = 19,215.20 : x
  2. Step 2: Convert to fraction form
    35,130.80/48,481.20 = 19,215.20/x
  3. Step 3: Cross multiply
    35,130.80x = 48,481.20 × 19,215.20
  4. Step 4: Simplify right side
    35,130.80x = 931,575,954.24
  5. Step 5: Solve for x
    x = 931,575,954.24/35,130.80
  6. Step 6: Final answer
    x = 26,517.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.