Home / 12,905.52-19,355.98-3,417.90

Finding the Fourth Proportional to 12,905.52, 19,355.98 and 3,417.90

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Solution

The fourth proportional to 12,905.52, 19,355.98 and 3,417.90 is: 5,126.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,905.52 : 19,355.98 = 3,417.90 : x
  2. Step 2: Convert to fraction form
    12,905.52/19,355.98 = 3,417.90/x
  3. Step 3: Cross multiply
    12,905.52x = 19,355.98 × 3,417.90
  4. Step 4: Simplify right side
    12,905.52x = 66,156,878.22
  5. Step 5: Solve for x
    x = 66,156,878.22/12,905.52
  6. Step 6: Final answer
    x = 5,126.25

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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.