Home / 20,073.61-27,700.39-11,120.47

Finding the Fourth Proportional to 20,073.61, 27,700.39 and 11,120.47

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Solution

The fourth proportional to 20,073.61, 27,700.39 and 11,120.47 is: 15,345.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,073.61 : 27,700.39 = 11,120.47 : x
  2. Step 2: Convert to fraction form
    20,073.61/27,700.39 = 11,120.47/x
  3. Step 3: Cross multiply
    20,073.61x = 27,700.39 × 11,120.47
  4. Step 4: Simplify right side
    20,073.61x = 308,041,238.08
  5. Step 5: Solve for x
    x = 308,041,238.08/20,073.61
  6. Step 6: Final answer
    x = 15,345.58

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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.