Home / 12,238.16-16,888.80-6,649.28

Finding the Fourth Proportional to 12,238.16, 16,888.80 and 6,649.28

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Solution

The fourth proportional to 12,238.16, 16,888.80 and 6,649.28 is: 9,176.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,238.16 : 16,888.80 = 6,649.28 : x
  2. Step 2: Convert to fraction form
    12,238.16/16,888.80 = 6,649.28/x
  3. Step 3: Cross multiply
    12,238.16x = 16,888.80 × 6,649.28
  4. Step 4: Simplify right side
    12,238.16x = 112,298,360.06
  5. Step 5: Solve for x
    x = 112,298,360.06/12,238.16
  6. Step 6: Final answer
    x = 9,176.08

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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.