Home / 18,750.21-27,959.91-18,581.45

Finding the Fourth Proportional to 18,750.21, 27,959.91 and 18,581.45

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Solution

The fourth proportional to 18,750.21, 27,959.91 and 18,581.45 is: 27,708.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,750.21 : 27,959.91 = 18,581.45 : x
  2. Step 2: Convert to fraction form
    18,750.21/27,959.91 = 18,581.45/x
  3. Step 3: Cross multiply
    18,750.21x = 27,959.91 × 18,581.45
  4. Step 4: Simplify right side
    18,750.21x = 519,535,616.97
  5. Step 5: Solve for x
    x = 519,535,616.97/18,750.21
  6. Step 6: Final answer
    x = 27,708.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.