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Finding the Fourth Proportional to 35,371.80, 53,078.40 and 13,200.48

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Solution

The fourth proportional to 35,371.80, 53,078.40 and 13,200.48 is: 19,808.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,371.80 : 53,078.40 = 13,200.48 : x
  2. Step 2: Convert to fraction form
    35,371.80/53,078.40 = 13,200.48/x
  3. Step 3: Cross multiply
    35,371.80x = 53,078.40 × 13,200.48
  4. Step 4: Simplify right side
    35,371.80x = 700,660,357.63
  5. Step 5: Solve for x
    x = 700,660,357.63/35,371.80
  6. Step 6: Final answer
    x = 19,808.45

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1.5x scale

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.