Home / 20,003.40-27,540-16,460.28

Finding the Fourth Proportional to 20,003.40, 27,540 and 16,460.28

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Solution

The fourth proportional to 20,003.40, 27,540 and 16,460.28 is: 22,661.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,003.40 : 27,540 = 16,460.28 : x
  2. Step 2: Convert to fraction form
    20,003.40/27,540 = 16,460.28/x
  3. Step 3: Cross multiply
    20,003.40x = 27,540 × 16,460.28
  4. Step 4: Simplify right side
    20,003.40x = 453,316,111.20
  5. Step 5: Solve for x
    x = 453,316,111.20/20,003.40
  6. Step 6: Final answer
    x = 22,661.95

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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.