Home / 15,913.49-21,958.16-9,197.81

Finding the Fourth Proportional to 15,913.49, 21,958.16 and 9,197.81

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Solution

The fourth proportional to 15,913.49, 21,958.16 and 9,197.81 is: 12,691.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,913.49 : 21,958.16 = 9,197.81 : x
  2. Step 2: Convert to fraction form
    15,913.49/21,958.16 = 9,197.81/x
  3. Step 3: Cross multiply
    15,913.49x = 21,958.16 × 9,197.81
  4. Step 4: Simplify right side
    15,913.49x = 201,966,827.85
  5. Step 5: Solve for x
    x = 201,966,827.85/15,913.49
  6. Step 6: Final answer
    x = 12,691.55

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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.