Home / 13,913.81-20,877.56-6,516.99

Finding the Fourth Proportional to 13,913.81, 20,877.56 and 6,516.99

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Solution

The fourth proportional to 13,913.81, 20,877.56 and 6,516.99 is: 9,778.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,913.81 : 20,877.56 = 6,516.99 : x
  2. Step 2: Convert to fraction form
    13,913.81/20,877.56 = 6,516.99/x
  3. Step 3: Cross multiply
    13,913.81x = 20,877.56 × 6,516.99
  4. Step 4: Simplify right side
    13,913.81x = 136,058,712.77
  5. Step 5: Solve for x
    x = 136,058,712.77/13,913.81
  6. Step 6: Final answer
    x = 9,778.68

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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.