Home / 12,239.31-16,887.81-7,203.76

Finding the Fourth Proportional to 12,239.31, 16,887.81 and 7,203.76

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Solution

The fourth proportional to 12,239.31, 16,887.81 and 7,203.76 is: 9,939.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,239.31 : 16,887.81 = 7,203.76 : x
  2. Step 2: Convert to fraction form
    12,239.31/16,887.81 = 7,203.76/x
  3. Step 3: Cross multiply
    12,239.31x = 16,887.81 × 7,203.76
  4. Step 4: Simplify right side
    12,239.31x = 121,655,730.17
  5. Step 5: Solve for x
    x = 121,655,730.17/12,239.31
  6. Step 6: Final answer
    x = 9,939.75

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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.