Home / 13,098.11-18,075.45-7,129.82

Finding the Fourth Proportional to 13,098.11, 18,075.45 and 7,129.82

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Solution

The fourth proportional to 13,098.11, 18,075.45 and 7,129.82 is: 9,839.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,098.11 : 18,075.45 = 7,129.82 : x
  2. Step 2: Convert to fraction form
    13,098.11/18,075.45 = 7,129.82/x
  3. Step 3: Cross multiply
    13,098.11x = 18,075.45 × 7,129.82
  4. Step 4: Simplify right side
    13,098.11x = 128,874,776.84
  5. Step 5: Solve for x
    x = 128,874,776.84/13,098.11
  6. Step 6: Final answer
    x = 9,839.19

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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.