Home / 12,726.09-17,568.63-9,887.07

Finding the Fourth Proportional to 12,726.09, 17,568.63 and 9,887.07

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Solution

The fourth proportional to 12,726.09, 17,568.63 and 9,887.07 is: 13,649.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,726.09 : 17,568.63 = 9,887.07 : x
  2. Step 2: Convert to fraction form
    12,726.09/17,568.63 = 9,887.07/x
  3. Step 3: Cross multiply
    12,726.09x = 17,568.63 × 9,887.07
  4. Step 4: Simplify right side
    12,726.09x = 173,702,274.61
  5. Step 5: Solve for x
    x = 173,702,274.61/12,726.09
  6. Step 6: Final answer
    x = 13,649.30

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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.