Home / 15,577.13-21,506.16-9,997.85

Finding the Fourth Proportional to 15,577.13, 21,506.16 and 9,997.85

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Solution

The fourth proportional to 15,577.13, 21,506.16 and 9,997.85 is: 13,803.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,577.13 : 21,506.16 = 9,997.85 : x
  2. Step 2: Convert to fraction form
    15,577.13/21,506.16 = 9,997.85/x
  3. Step 3: Cross multiply
    15,577.13x = 21,506.16 × 9,997.85
  4. Step 4: Simplify right side
    15,577.13x = 215,015,361.76
  5. Step 5: Solve for x
    x = 215,015,361.76/15,577.13
  6. Step 6: Final answer
    x = 13,803.27

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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.