Home / 13,351.49-20,039.28-7,116.70

Finding the Fourth Proportional to 13,351.49, 20,039.28 and 7,116.70

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Solution

The fourth proportional to 13,351.49, 20,039.28 and 7,116.70 is: 10,681.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,351.49 : 20,039.28 = 7,116.70 : x
  2. Step 2: Convert to fraction form
    13,351.49/20,039.28 = 7,116.70/x
  3. Step 3: Cross multiply
    13,351.49x = 20,039.28 × 7,116.70
  4. Step 4: Simplify right side
    13,351.49x = 142,613,467.19
  5. Step 5: Solve for x
    x = 142,613,467.19/13,351.49
  6. Step 6: Final answer
    x = 10,681.46

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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.