Home / 13,772.09-19,008.23-8,742.30

Finding the Fourth Proportional to 13,772.09, 19,008.23 and 8,742.30

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Solution

The fourth proportional to 13,772.09, 19,008.23 and 8,742.30 is: 12,066.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,772.09 : 19,008.23 = 8,742.30 : x
  2. Step 2: Convert to fraction form
    13,772.09/19,008.23 = 8,742.30/x
  3. Step 3: Cross multiply
    13,772.09x = 19,008.23 × 8,742.30
  4. Step 4: Simplify right side
    13,772.09x = 166,175,649.13
  5. Step 5: Solve for x
    x = 166,175,649.13/13,772.09
  6. Step 6: Final answer
    x = 12,066.12

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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.