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Finding the Fourth Proportional to 13,064.68, 18,020.22 and 10,905.16

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Solution

The fourth proportional to 13,064.68, 18,020.22 and 10,905.16 is: 15,041.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,064.68 : 18,020.22 = 10,905.16 : x
  2. Step 2: Convert to fraction form
    13,064.68/18,020.22 = 10,905.16/x
  3. Step 3: Cross multiply
    13,064.68x = 18,020.22 × 10,905.16
  4. Step 4: Simplify right side
    13,064.68x = 196,513,382.34
  5. Step 5: Solve for x
    x = 196,513,382.34/13,064.68
  6. Step 6: Final answer
    x = 15,041.58

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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.