Home / 15,699.30-21,665.44-8,625.90

Finding the Fourth Proportional to 15,699.30, 21,665.44 and 8,625.90

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Solution

The fourth proportional to 15,699.30, 21,665.44 and 8,625.90 is: 11,903.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,699.30 : 21,665.44 = 8,625.90 : x
  2. Step 2: Convert to fraction form
    15,699.30/21,665.44 = 8,625.90/x
  3. Step 3: Cross multiply
    15,699.30x = 21,665.44 × 8,625.90
  4. Step 4: Simplify right side
    15,699.30x = 186,883,875.77
  5. Step 5: Solve for x
    x = 186,883,875.77/15,699.30
  6. Step 6: Final answer
    x = 11,903.96

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1.5x scale

Why These Related Problems?

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