Home / 12,488.77-18,741.66-6,649.48

Finding the Fourth Proportional to 12,488.77, 18,741.66 and 6,649.48

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Solution

The fourth proportional to 12,488.77, 18,741.66 and 6,649.48 is: 9,978.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,488.77 : 18,741.66 = 6,649.48 : x
  2. Step 2: Convert to fraction form
    12,488.77/18,741.66 = 6,649.48/x
  3. Step 3: Cross multiply
    12,488.77x = 18,741.66 × 6,649.48
  4. Step 4: Simplify right side
    12,488.77x = 124,622,293.34
  5. Step 5: Solve for x
    x = 124,622,293.34/12,488.77
  6. Step 6: Final answer
    x = 9,978.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.