Home / 20,507.14-28,299.85-11,075.70

Finding the Fourth Proportional to 20,507.14, 28,299.85 and 11,075.70

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Solution

The fourth proportional to 20,507.14, 28,299.85 and 11,075.70 is: 15,284.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,507.14 : 28,299.85 = 11,075.70 : x
  2. Step 2: Convert to fraction form
    20,507.14/28,299.85 = 11,075.70/x
  3. Step 3: Cross multiply
    20,507.14x = 28,299.85 × 11,075.70
  4. Step 4: Simplify right side
    20,507.14x = 313,440,727.08
  5. Step 5: Solve for x
    x = 313,440,727.08/20,507.14
  6. Step 6: Final answer
    x = 15,284.47

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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.