Home / 21,252.30-31,879.59-6,461.70

Finding the Fourth Proportional to 21,252.30, 31,879.59 and 6,461.70

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Solution

The fourth proportional to 21,252.30, 31,879.59 and 6,461.70 is: 9,692.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,252.30 : 31,879.59 = 6,461.70 : x
  2. Step 2: Convert to fraction form
    21,252.30/31,879.59 = 6,461.70/x
  3. Step 3: Cross multiply
    21,252.30x = 31,879.59 × 6,461.70
  4. Step 4: Simplify right side
    21,252.30x = 205,996,346.70
  5. Step 5: Solve for x
    x = 205,996,346.70/21,252.30
  6. Step 6: Final answer
    x = 9,692.90

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1.5x scale

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.