Home / 13,261.78-18,300.63-7,293.70

Finding the Fourth Proportional to 13,261.78, 18,300.63 and 7,293.70

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Solution

The fourth proportional to 13,261.78, 18,300.63 and 7,293.70 is: 10,064.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,261.78 : 18,300.63 = 7,293.70 : x
  2. Step 2: Convert to fraction form
    13,261.78/18,300.63 = 7,293.70/x
  3. Step 3: Cross multiply
    13,261.78x = 18,300.63 × 7,293.70
  4. Step 4: Simplify right side
    13,261.78x = 133,479,305.03
  5. Step 5: Solve for x
    x = 133,479,305.03/13,261.78
  6. Step 6: Final answer
    x = 10,064.96

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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.