Home / 13,075.38-18,043.28-7,107

Finding the Fourth Proportional to 13,075.38, 18,043.28 and 7,107

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Solution

The fourth proportional to 13,075.38, 18,043.28 and 7,107 is: 9,807.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,075.38 : 18,043.28 = 7,107 : x
  2. Step 2: Convert to fraction form
    13,075.38/18,043.28 = 7,107/x
  3. Step 3: Cross multiply
    13,075.38x = 18,043.28 × 7,107
  4. Step 4: Simplify right side
    13,075.38x = 128,233,555.43
  5. Step 5: Solve for x
    x = 128,233,555.43/13,075.38
  6. Step 6: Final answer
    x = 9,807.25

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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.