Home / 15,699.28-21,665.50-8,625.84

Finding the Fourth Proportional to 15,699.28, 21,665.50 and 8,625.84

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Solution

The fourth proportional to 15,699.28, 21,665.50 and 8,625.84 is: 11,903.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,699.28 : 21,665.50 = 8,625.84 : x
  2. Step 2: Convert to fraction form
    15,699.28/21,665.50 = 8,625.84/x
  3. Step 3: Cross multiply
    15,699.28x = 21,665.50 × 8,625.84
  4. Step 4: Simplify right side
    15,699.28x = 186,883,136.52
  5. Step 5: Solve for x
    x = 186,883,136.52/15,699.28
  6. Step 6: Final answer
    x = 11,903.93

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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.