Home / 28,515.48-42,715.81-23,881.78

Finding the Fourth Proportional to 28,515.48, 42,715.81 and 23,881.78

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Solution

The fourth proportional to 28,515.48, 42,715.81 and 23,881.78 is: 35,774.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,515.48 : 42,715.81 = 23,881.78 : x
  2. Step 2: Convert to fraction form
    28,515.48/42,715.81 = 23,881.78/x
  3. Step 3: Cross multiply
    28,515.48x = 42,715.81 × 23,881.78
  4. Step 4: Simplify right side
    28,515.48x = 1,020,129,243.95
  5. Step 5: Solve for x
    x = 1,020,129,243.95/28,515.48
  6. Step 6: Final answer
    x = 35,774.58

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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.