Home / 12,669.95-17,480.27-8,199.36

Finding the Fourth Proportional to 12,669.95, 17,480.27 and 8,199.36

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Solution

The fourth proportional to 12,669.95, 17,480.27 and 8,199.36 is: 11,312.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,669.95 : 17,480.27 = 8,199.36 : x
  2. Step 2: Convert to fraction form
    12,669.95/17,480.27 = 8,199.36/x
  3. Step 3: Cross multiply
    12,669.95x = 17,480.27 × 8,199.36
  4. Step 4: Simplify right side
    12,669.95x = 143,327,047.13
  5. Step 5: Solve for x
    x = 143,327,047.13/12,669.95
  6. Step 6: Final answer
    x = 11,312.36

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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.