Home / 20,075.28-27,709.59-12,118.02

Finding the Fourth Proportional to 20,075.28, 27,709.59 and 12,118.02

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Solution

The fourth proportional to 20,075.28, 27,709.59 and 12,118.02 is: 16,726.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,075.28 : 27,709.59 = 12,118.02 : x
  2. Step 2: Convert to fraction form
    20,075.28/27,709.59 = 12,118.02/x
  3. Step 3: Cross multiply
    20,075.28x = 27,709.59 × 12,118.02
  4. Step 4: Simplify right side
    20,075.28x = 335,785,463.21
  5. Step 5: Solve for x
    x = 335,785,463.21/20,075.28
  6. Step 6: Final answer
    x = 16,726.32

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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.