Home / 13,941.46-19,238.90-7,972.78

Finding the Fourth Proportional to 13,941.46, 19,238.90 and 7,972.78

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Solution

The fourth proportional to 13,941.46, 19,238.90 and 7,972.78 is: 11,002.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,941.46 : 19,238.90 = 7,972.78 : x
  2. Step 2: Convert to fraction form
    13,941.46/19,238.90 = 7,972.78/x
  3. Step 3: Cross multiply
    13,941.46x = 19,238.90 × 7,972.78
  4. Step 4: Simplify right side
    13,941.46x = 153,387,420.95
  5. Step 5: Solve for x
    x = 153,387,420.95/13,941.46
  6. Step 6: Final answer
    x = 11,002.25

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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.