Home / 13,599.09-20,398.64-4,371.57

Finding the Fourth Proportional to 13,599.09, 20,398.64 and 4,371.57

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Solution

The fourth proportional to 13,599.09, 20,398.64 and 4,371.57 is: 6,557.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,599.09 : 20,398.64 = 4,371.57 : x
  2. Step 2: Convert to fraction form
    13,599.09/20,398.64 = 4,371.57/x
  3. Step 3: Cross multiply
    13,599.09x = 20,398.64 × 4,371.57
  4. Step 4: Simplify right side
    13,599.09x = 89,174,060.81
  5. Step 5: Solve for x
    x = 89,174,060.81/13,599.09
  6. Step 6: Final answer
    x = 6,557.36

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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.