Home / 21,024.05-29,015.21-15,709.64

Finding the Fourth Proportional to 21,024.05, 29,015.21 and 15,709.64

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Solution

The fourth proportional to 21,024.05, 29,015.21 and 15,709.64 is: 21,680.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,024.05 : 29,015.21 = 15,709.64 : x
  2. Step 2: Convert to fraction form
    21,024.05/29,015.21 = 15,709.64/x
  3. Step 3: Cross multiply
    21,024.05x = 29,015.21 × 15,709.64
  4. Step 4: Simplify right side
    21,024.05x = 455,818,397.82
  5. Step 5: Solve for x
    x = 455,818,397.82/21,024.05
  6. Step 6: Final answer
    x = 21,680.81

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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.