Home / 13,570.29-20,386.61-9,631.32

Finding the Fourth Proportional to 13,570.29, 20,386.61 and 9,631.32

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Solution

The fourth proportional to 13,570.29, 20,386.61 and 9,631.32 is: 14,469.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,570.29 : 20,386.61 = 9,631.32 : x
  2. Step 2: Convert to fraction form
    13,570.29/20,386.61 = 9,631.32/x
  3. Step 3: Cross multiply
    13,570.29x = 20,386.61 × 9,631.32
  4. Step 4: Simplify right side
    13,570.29x = 196,350,039.67
  5. Step 5: Solve for x
    x = 196,350,039.67/13,570.29
  6. Step 6: Final answer
    x = 14,469.12

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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.