Home / 13,725.75-18,941.63-7,438.17

Finding the Fourth Proportional to 13,725.75, 18,941.63 and 7,438.17

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Solution

The fourth proportional to 13,725.75, 18,941.63 and 7,438.17 is: 10,264.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,725.75 : 18,941.63 = 7,438.17 : x
  2. Step 2: Convert to fraction form
    13,725.75/18,941.63 = 7,438.17/x
  3. Step 3: Cross multiply
    13,725.75x = 18,941.63 × 7,438.17
  4. Step 4: Simplify right side
    13,725.75x = 140,891,026.83
  5. Step 5: Solve for x
    x = 140,891,026.83/13,725.75
  6. Step 6: Final answer
    x = 10,264.72

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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.