Home / 13,631.68-18,810.66-7,662.18

Finding the Fourth Proportional to 13,631.68, 18,810.66 and 7,662.18

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Solution

The fourth proportional to 13,631.68, 18,810.66 and 7,662.18 is: 10,573.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.68 : 18,810.66 = 7,662.18 : x
  2. Step 2: Convert to fraction form
    13,631.68/18,810.66 = 7,662.18/x
  3. Step 3: Cross multiply
    13,631.68x = 18,810.66 × 7,662.18
  4. Step 4: Simplify right side
    13,631.68x = 144,130,662.84
  5. Step 5: Solve for x
    x = 144,130,662.84/13,631.68
  6. Step 6: Final answer
    x = 10,573.21

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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.