Home / 20,065.68-27,681.90-12,103.48

Finding the Fourth Proportional to 20,065.68, 27,681.90 and 12,103.48

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Solution

The fourth proportional to 20,065.68, 27,681.90 and 12,103.48 is: 16,697.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,065.68 : 27,681.90 = 12,103.48 : x
  2. Step 2: Convert to fraction form
    20,065.68/27,681.90 = 12,103.48/x
  3. Step 3: Cross multiply
    20,065.68x = 27,681.90 × 12,103.48
  4. Step 4: Simplify right side
    20,065.68x = 335,047,323.01
  5. Step 5: Solve for x
    x = 335,047,323.01/20,065.68
  6. Step 6: Final answer
    x = 16,697.53

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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.