Home / 13,778.51-20,669.21-5,881.82

Finding the Fourth Proportional to 13,778.51, 20,669.21 and 5,881.82

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Solution

The fourth proportional to 13,778.51, 20,669.21 and 5,881.82 is: 8,823.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,778.51 : 20,669.21 = 5,881.82 : x
  2. Step 2: Convert to fraction form
    13,778.51/20,669.21 = 5,881.82/x
  3. Step 3: Cross multiply
    13,778.51x = 20,669.21 × 5,881.82
  4. Step 4: Simplify right side
    13,778.51x = 121,572,462.06
  5. Step 5: Solve for x
    x = 121,572,462.06/13,778.51
  6. Step 6: Final answer
    x = 8,823.34

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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.