Home / 21,090.96-31,652.08-9,997.67

Finding the Fourth Proportional to 21,090.96, 31,652.08 and 9,997.67

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Solution

The fourth proportional to 21,090.96, 31,652.08 and 9,997.67 is: 15,003.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,090.96 : 31,652.08 = 9,997.67 : x
  2. Step 2: Convert to fraction form
    21,090.96/31,652.08 = 9,997.67/x
  3. Step 3: Cross multiply
    21,090.96x = 31,652.08 × 9,997.67
  4. Step 4: Simplify right side
    21,090.96x = 316,446,892.39
  5. Step 5: Solve for x
    x = 316,446,892.39/21,090.96
  6. Step 6: Final answer
    x = 15,003.91

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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.