Home / 10,099.40-13,937.64-5,623.20

Finding the Fourth Proportional to 10,099.40, 13,937.64 and 5,623.20

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Solution

The fourth proportional to 10,099.40, 13,937.64 and 5,623.20 is: 7,760.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,099.40 : 13,937.64 = 5,623.20 : x
  2. Step 2: Convert to fraction form
    10,099.40/13,937.64 = 5,623.20/x
  3. Step 3: Cross multiply
    10,099.40x = 13,937.64 × 5,623.20
  4. Step 4: Simplify right side
    10,099.40x = 78,374,137.25
  5. Step 5: Solve for x
    x = 78,374,137.25/10,099.40
  6. Step 6: Final answer
    x = 7,760.28

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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.