Home / 30,981.96-42,758.97-17,557.53

Finding the Fourth Proportional to 30,981.96, 42,758.97 and 17,557.53

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Solution

The fourth proportional to 30,981.96, 42,758.97 and 17,557.53 is: 24,231.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,981.96 : 42,758.97 = 17,557.53 : x
  2. Step 2: Convert to fraction form
    30,981.96/42,758.97 = 17,557.53/x
  3. Step 3: Cross multiply
    30,981.96x = 42,758.97 × 17,557.53
  4. Step 4: Simplify right side
    30,981.96x = 750,742,049.34
  5. Step 5: Solve for x
    x = 750,742,049.34/30,981.96
  6. Step 6: Final answer
    x = 24,231.59

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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.