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Finding the Fourth Proportional to 15,398.85, 23,090.04 and 7,995.87

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Solution

The fourth proportional to 15,398.85, 23,090.04 and 7,995.87 is: 11,989.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,398.85 : 23,090.04 = 7,995.87 : x
  2. Step 2: Convert to fraction form
    15,398.85/23,090.04 = 7,995.87/x
  3. Step 3: Cross multiply
    15,398.85x = 23,090.04 × 7,995.87
  4. Step 4: Simplify right side
    15,398.85x = 184,624,958.13
  5. Step 5: Solve for x
    x = 184,624,958.13/15,398.85
  6. Step 6: Final answer
    x = 11,989.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.