Home / 12,543.66-17,321.96-8,075.18

Finding the Fourth Proportional to 12,543.66, 17,321.96 and 8,075.18

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Solution

The fourth proportional to 12,543.66, 17,321.96 and 8,075.18 is: 11,151.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,543.66 : 17,321.96 = 8,075.18 : x
  2. Step 2: Convert to fraction form
    12,543.66/17,321.96 = 8,075.18/x
  3. Step 3: Cross multiply
    12,543.66x = 17,321.96 × 8,075.18
  4. Step 4: Simplify right side
    12,543.66x = 139,877,817.97
  5. Step 5: Solve for x
    x = 139,877,817.97/12,543.66
  6. Step 6: Final answer
    x = 11,151.28

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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.