Home / 9,319.20-13,917.48-8,090.40

Finding the Fourth Proportional to 9,319.20, 13,917.48 and 8,090.40

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Solution

The fourth proportional to 9,319.20, 13,917.48 and 8,090.40 is: 12,082.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,319.20 : 13,917.48 = 8,090.40 : x
  2. Step 2: Convert to fraction form
    9,319.20/13,917.48 = 8,090.40/x
  3. Step 3: Cross multiply
    9,319.20x = 13,917.48 × 8,090.40
  4. Step 4: Simplify right side
    9,319.20x = 112,597,980.19
  5. Step 5: Solve for x
    x = 112,597,980.19/9,319.20
  6. Step 6: Final answer
    x = 12,082.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.