Home / 13,712.36-20,569.50-6,785

Finding the Fourth Proportional to 13,712.36, 20,569.50 and 6,785

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Solution

The fourth proportional to 13,712.36, 20,569.50 and 6,785 is: 10,177.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,712.36 : 20,569.50 = 6,785 : x
  2. Step 2: Convert to fraction form
    13,712.36/20,569.50 = 6,785/x
  3. Step 3: Cross multiply
    13,712.36x = 20,569.50 × 6,785
  4. Step 4: Simplify right side
    13,712.36x = 139,564,057.50
  5. Step 5: Solve for x
    x = 139,564,057.50/13,712.36
  6. Step 6: Final answer
    x = 10,177.98

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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.