Home / 30,117.68-41,557.56-18,931.76

Finding the Fourth Proportional to 30,117.68, 41,557.56 and 18,931.76

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Solution

The fourth proportional to 30,117.68, 41,557.56 and 18,931.76 is: 26,122.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,117.68 : 41,557.56 = 18,931.76 : x
  2. Step 2: Convert to fraction form
    30,117.68/41,557.56 = 18,931.76/x
  3. Step 3: Cross multiply
    30,117.68x = 41,557.56 × 18,931.76
  4. Step 4: Simplify right side
    30,117.68x = 786,757,752.11
  5. Step 5: Solve for x
    x = 786,757,752.11/30,117.68
  6. Step 6: Final answer
    x = 26,122.79

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.