Home / 9,921.04-13,690.15-5,671.26

Finding the Fourth Proportional to 9,921.04, 13,690.15 and 5,671.26

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Solution

The fourth proportional to 9,921.04, 13,690.15 and 5,671.26 is: 7,825.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,921.04 : 13,690.15 = 5,671.26 : x
  2. Step 2: Convert to fraction form
    9,921.04/13,690.15 = 5,671.26/x
  3. Step 3: Cross multiply
    9,921.04x = 13,690.15 × 5,671.26
  4. Step 4: Simplify right side
    9,921.04x = 77,640,385.91
  5. Step 5: Solve for x
    x = 77,640,385.91/9,921.04
  6. Step 6: Final answer
    x = 7,825.83

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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.