Home / 13,931.04-19,223.64-7,961.52

Finding the Fourth Proportional to 13,931.04, 19,223.64 and 7,961.52

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Solution

The fourth proportional to 13,931.04, 19,223.64 and 7,961.52 is: 10,986.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.04 : 19,223.64 = 7,961.52 : x
  2. Step 2: Convert to fraction form
    13,931.04/19,223.64 = 7,961.52/x
  3. Step 3: Cross multiply
    13,931.04x = 19,223.64 × 7,961.52
  4. Step 4: Simplify right side
    13,931.04x = 153,049,394.33
  5. Step 5: Solve for x
    x = 153,049,394.33/13,931.04
  6. Step 6: Final answer
    x = 10,986.21

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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.