Home / 30,788.40-42,487.14-17,359.54

Finding the Fourth Proportional to 30,788.40, 42,487.14 and 17,359.54

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Solution

The fourth proportional to 30,788.40, 42,487.14 and 17,359.54 is: 23,955.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,788.40 : 42,487.14 = 17,359.54 : x
  2. Step 2: Convert to fraction form
    30,788.40/42,487.14 = 17,359.54/x
  3. Step 3: Cross multiply
    30,788.40x = 42,487.14 × 17,359.54
  4. Step 4: Simplify right side
    30,788.40x = 737,556,993.88
  5. Step 5: Solve for x
    x = 737,556,993.88/30,788.40
  6. Step 6: Final answer
    x = 23,955.68

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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.