Home / 13,718.48-20,570.40-4,355.96

Finding the Fourth Proportional to 13,718.48, 20,570.40 and 4,355.96

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Solution

The fourth proportional to 13,718.48, 20,570.40 and 4,355.96 is: 6,531.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,718.48 : 20,570.40 = 4,355.96 : x
  2. Step 2: Convert to fraction form
    13,718.48/20,570.40 = 4,355.96/x
  3. Step 3: Cross multiply
    13,718.48x = 20,570.40 × 4,355.96
  4. Step 4: Simplify right side
    13,718.48x = 89,603,839.58
  5. Step 5: Solve for x
    x = 89,603,839.58/13,718.48
  6. Step 6: Final answer
    x = 6,531.62

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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.