Home / 30,921.79-42,669.48-17,489.95

Finding the Fourth Proportional to 30,921.79, 42,669.48 and 17,489.95

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Solution

The fourth proportional to 30,921.79, 42,669.48 and 17,489.95 is: 24,134.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,921.79 : 42,669.48 = 17,489.95 : x
  2. Step 2: Convert to fraction form
    30,921.79/42,669.48 = 17,489.95/x
  3. Step 3: Cross multiply
    30,921.79x = 42,669.48 × 17,489.95
  4. Step 4: Simplify right side
    30,921.79x = 746,287,071.73
  5. Step 5: Solve for x
    x = 746,287,071.73/30,921.79
  6. Step 6: Final answer
    x = 24,134.67

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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.