Home / 22,140.08-30,555.08-12,711.68

Finding the Fourth Proportional to 22,140.08, 30,555.08 and 12,711.68

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Solution

The fourth proportional to 22,140.08, 30,555.08 and 12,711.68 is: 17,543.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,140.08 : 30,555.08 = 12,711.68 : x
  2. Step 2: Convert to fraction form
    22,140.08/30,555.08 = 12,711.68/x
  3. Step 3: Cross multiply
    22,140.08x = 30,555.08 × 12,711.68
  4. Step 4: Simplify right side
    22,140.08x = 388,406,399.33
  5. Step 5: Solve for x
    x = 388,406,399.33/22,140.08
  6. Step 6: Final answer
    x = 17,543.13

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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.