Home / 13,631.74-18,812.16-7,663.03

Finding the Fourth Proportional to 13,631.74, 18,812.16 and 7,663.03

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Solution

The fourth proportional to 13,631.74, 18,812.16 and 7,663.03 is: 10,575.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.74 : 18,812.16 = 7,663.03 : x
  2. Step 2: Convert to fraction form
    13,631.74/18,812.16 = 7,663.03/x
  3. Step 3: Cross multiply
    13,631.74x = 18,812.16 × 7,663.03
  4. Step 4: Simplify right side
    13,631.74x = 144,158,146.44
  5. Step 5: Solve for x
    x = 144,158,146.44/13,631.74
  6. Step 6: Final answer
    x = 10,575.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.