Home / 84,280.60-126,428.14-21,951

Finding the Fourth Proportional to 84,280.60, 126,428.14 and 21,951

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Solution

The fourth proportional to 84,280.60, 126,428.14 and 21,951 is: 32,928.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,280.60 : 126,428.14 = 21,951 : x
  2. Step 2: Convert to fraction form
    84,280.60/126,428.14 = 21,951/x
  3. Step 3: Cross multiply
    84,280.60x = 126,428.14 × 21,951
  4. Step 4: Simplify right side
    84,280.60x = 2,775,224,101.14
  5. Step 5: Solve for x
    x = 2,775,224,101.14/84,280.60
  6. Step 6: Final answer
    x = 32,928.39

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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.