Home / 10,173.60-14,110.20-9,979.20

Finding the Fourth Proportional to 10,173.60, 14,110.20 and 9,979.20

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Solution

The fourth proportional to 10,173.60, 14,110.20 and 9,979.20 is: 13,840.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,173.60 : 14,110.20 = 9,979.20 : x
  2. Step 2: Convert to fraction form
    10,173.60/14,110.20 = 9,979.20/x
  3. Step 3: Cross multiply
    10,173.60x = 14,110.20 × 9,979.20
  4. Step 4: Simplify right side
    10,173.60x = 140,808,507.84
  5. Step 5: Solve for x
    x = 140,808,507.84/10,173.60
  6. Step 6: Final answer
    x = 13,840.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.