Home / 15,910.42-21,955.10-9,196.49

Finding the Fourth Proportional to 15,910.42, 21,955.10 and 9,196.49

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Solution

The fourth proportional to 15,910.42, 21,955.10 and 9,196.49 is: 12,690.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,910.42 : 21,955.10 = 9,196.49 : x
  2. Step 2: Convert to fraction form
    15,910.42/21,955.10 = 9,196.49/x
  3. Step 3: Cross multiply
    15,910.42x = 21,955.10 × 9,196.49
  4. Step 4: Simplify right side
    15,910.42x = 201,909,701.84
  5. Step 5: Solve for x
    x = 201,909,701.84/15,910.42
  6. Step 6: Final answer
    x = 12,690.41

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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.