Home / 12,865.70-17,754.48-7,200.35

Finding the Fourth Proportional to 12,865.70, 17,754.48 and 7,200.35

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Solution

The fourth proportional to 12,865.70, 17,754.48 and 7,200.35 is: 9,936.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,865.70 : 17,754.48 = 7,200.35 : x
  2. Step 2: Convert to fraction form
    12,865.70/17,754.48 = 7,200.35/x
  3. Step 3: Cross multiply
    12,865.70x = 17,754.48 × 7,200.35
  4. Step 4: Simplify right side
    12,865.70x = 127,838,381.30
  5. Step 5: Solve for x
    x = 127,838,381.30/12,865.70
  6. Step 6: Final answer
    x = 9,936.38

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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.