Home / 20,244.71-27,937.81-11,170.40

Finding the Fourth Proportional to 20,244.71, 27,937.81 and 11,170.40

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Solution

The fourth proportional to 20,244.71, 27,937.81 and 11,170.40 is: 15,415.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,244.71 : 27,937.81 = 11,170.40 : x
  2. Step 2: Convert to fraction form
    20,244.71/27,937.81 = 11,170.40/x
  3. Step 3: Cross multiply
    20,244.71x = 27,937.81 × 11,170.40
  4. Step 4: Simplify right side
    20,244.71x = 312,076,387.10
  5. Step 5: Solve for x
    x = 312,076,387.10/20,244.71
  6. Step 6: Final answer
    x = 15,415.20

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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.