Home / 19,719.97-27,210.05-11,220.74

Finding the Fourth Proportional to 19,719.97, 27,210.05 and 11,220.74

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Solution

The fourth proportional to 19,719.97, 27,210.05 and 11,220.74 is: 15,482.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,719.97 : 27,210.05 = 11,220.74 : x
  2. Step 2: Convert to fraction form
    19,719.97/27,210.05 = 11,220.74/x
  3. Step 3: Cross multiply
    19,719.97x = 27,210.05 × 11,220.74
  4. Step 4: Simplify right side
    19,719.97x = 305,316,896.44
  5. Step 5: Solve for x
    x = 305,316,896.44/19,719.97
  6. Step 6: Final answer
    x = 15,482.62

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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.