Home / 14,077.80-21,115.62-3,689.28

Finding the Fourth Proportional to 14,077.80, 21,115.62 and 3,689.28

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Solution

The fourth proportional to 14,077.80, 21,115.62 and 3,689.28 is: 5,533.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,077.80 : 21,115.62 = 3,689.28 : x
  2. Step 2: Convert to fraction form
    14,077.80/21,115.62 = 3,689.28/x
  3. Step 3: Cross multiply
    14,077.80x = 21,115.62 × 3,689.28
  4. Step 4: Simplify right side
    14,077.80x = 77,901,434.55
  5. Step 5: Solve for x
    x = 77,901,434.55/14,077.80
  6. Step 6: Final answer
    x = 5,533.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.