Home / 9,840.20-13,579.16-5,363.88

Finding the Fourth Proportional to 9,840.20, 13,579.16 and 5,363.88

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Solution

The fourth proportional to 9,840.20, 13,579.16 and 5,363.88 is: 7,401.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,840.20 : 13,579.16 = 5,363.88 : x
  2. Step 2: Convert to fraction form
    9,840.20/13,579.16 = 5,363.88/x
  3. Step 3: Cross multiply
    9,840.20x = 13,579.16 × 5,363.88
  4. Step 4: Simplify right side
    9,840.20x = 72,836,984.74
  5. Step 5: Solve for x
    x = 72,836,984.74/9,840.20
  6. Step 6: Final answer
    x = 7,401.98

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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.