Home / 42,729.73-64,087.20-11,557.69

Finding the Fourth Proportional to 42,729.73, 64,087.20 and 11,557.69

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Solution

The fourth proportional to 42,729.73, 64,087.20 and 11,557.69 is: 17,334.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,729.73 : 64,087.20 = 11,557.69 : x
  2. Step 2: Convert to fraction form
    42,729.73/64,087.20 = 11,557.69/x
  3. Step 3: Cross multiply
    42,729.73x = 64,087.20 × 11,557.69
  4. Step 4: Simplify right side
    42,729.73x = 740,699,830.35
  5. Step 5: Solve for x
    x = 740,699,830.35/42,729.73
  6. Step 6: Final answer
    x = 17,334.53

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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.