Home / 19,798.17-27,318.93-15,775.20

Finding the Fourth Proportional to 19,798.17, 27,318.93 and 15,775.20

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Solution

The fourth proportional to 19,798.17, 27,318.93 and 15,775.20 is: 21,767.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,798.17 : 27,318.93 = 15,775.20 : x
  2. Step 2: Convert to fraction form
    19,798.17/27,318.93 = 15,775.20/x
  3. Step 3: Cross multiply
    19,798.17x = 27,318.93 × 15,775.20
  4. Step 4: Simplify right side
    19,798.17x = 430,961,584.54
  5. Step 5: Solve for x
    x = 430,961,584.54/19,798.17
  6. Step 6: Final answer
    x = 21,767.75

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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.