Home / 13,122.68-18,116.21-10,542.47

Finding the Fourth Proportional to 13,122.68, 18,116.21 and 10,542.47

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Solution

The fourth proportional to 13,122.68, 18,116.21 and 10,542.47 is: 14,554.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122.68 : 18,116.21 = 10,542.47 : x
  2. Step 2: Convert to fraction form
    13,122.68/18,116.21 = 10,542.47/x
  3. Step 3: Cross multiply
    13,122.68x = 18,116.21 × 10,542.47
  4. Step 4: Simplify right side
    13,122.68x = 190,989,536.21
  5. Step 5: Solve for x
    x = 190,989,536.21/13,122.68
  6. Step 6: Final answer
    x = 14,554.16

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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.