Home / 21,438.72-32,157.12-5,856.36

Finding the Fourth Proportional to 21,438.72, 32,157.12 and 5,856.36

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Solution

The fourth proportional to 21,438.72, 32,157.12 and 5,856.36 is: 8,784.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438.72 : 32,157.12 = 5,856.36 : x
  2. Step 2: Convert to fraction form
    21,438.72/32,157.12 = 5,856.36/x
  3. Step 3: Cross multiply
    21,438.72x = 32,157.12 × 5,856.36
  4. Step 4: Simplify right side
    21,438.72x = 188,323,671.28
  5. Step 5: Solve for x
    x = 188,323,671.28/21,438.72
  6. Step 6: Final answer
    x = 8,784.28

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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.