Home / 15,845.84-21,857.68-10,178.68

Finding the Fourth Proportional to 15,845.84, 21,857.68 and 10,178.68

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Solution

The fourth proportional to 15,845.84, 21,857.68 and 10,178.68 is: 14,040.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,845.84 : 21,857.68 = 10,178.68 : x
  2. Step 2: Convert to fraction form
    15,845.84/21,857.68 = 10,178.68/x
  3. Step 3: Cross multiply
    15,845.84x = 21,857.68 × 10,178.68
  4. Step 4: Simplify right side
    15,845.84x = 222,482,330.26
  5. Step 5: Solve for x
    x = 222,482,330.26/15,845.84
  6. Step 6: Final answer
    x = 14,040.43

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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.