Home / 15,699.49-21,664.80-8,625.46

Finding the Fourth Proportional to 15,699.49, 21,664.80 and 8,625.46

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Solution

The fourth proportional to 15,699.49, 21,664.80 and 8,625.46 is: 11,902.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,699.49 : 21,664.80 = 8,625.46 : x
  2. Step 2: Convert to fraction form
    15,699.49/21,664.80 = 8,625.46/x
  3. Step 3: Cross multiply
    15,699.49x = 21,664.80 × 8,625.46
  4. Step 4: Simplify right side
    15,699.49x = 186,868,865.81
  5. Step 5: Solve for x
    x = 186,868,865.81/15,699.49
  6. Step 6: Final answer
    x = 11,902.86

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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.