Home / 21,796.18-30,090.81-15,000.10

Finding the Fourth Proportional to 21,796.18, 30,090.81 and 15,000.10

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Solution

The fourth proportional to 21,796.18, 30,090.81 and 15,000.10 is: 20,708.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,796.18 : 30,090.81 = 15,000.10 : x
  2. Step 2: Convert to fraction form
    21,796.18/30,090.81 = 15,000.10/x
  3. Step 3: Cross multiply
    21,796.18x = 30,090.81 × 15,000.10
  4. Step 4: Simplify right side
    21,796.18x = 451,365,159.08
  5. Step 5: Solve for x
    x = 451,365,159.08/21,796.18
  6. Step 6: Final answer
    x = 20,708.45

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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.