Home / 13,931.46-19,226.16-7,963.38

Finding the Fourth Proportional to 13,931.46, 19,226.16 and 7,963.38

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Solution

The fourth proportional to 13,931.46, 19,226.16 and 7,963.38 is: 10,989.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.46 : 19,226.16 = 7,963.38 : x
  2. Step 2: Convert to fraction form
    13,931.46/19,226.16 = 7,963.38/x
  3. Step 3: Cross multiply
    13,931.46x = 19,226.16 × 7,963.38
  4. Step 4: Simplify right side
    13,931.46x = 153,105,218.02
  5. Step 5: Solve for x
    x = 153,105,218.02/13,931.46
  6. Step 6: Final answer
    x = 10,989.89

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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.