Home / 21,428.72-32,143.12-5,848.64

Finding the Fourth Proportional to 21,428.72, 32,143.12 and 5,848.64

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Solution

The fourth proportional to 21,428.72, 32,143.12 and 5,848.64 is: 8,772.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,428.72 : 32,143.12 = 5,848.64 : x
  2. Step 2: Convert to fraction form
    21,428.72/32,143.12 = 5,848.64/x
  3. Step 3: Cross multiply
    21,428.72x = 32,143.12 × 5,848.64
  4. Step 4: Simplify right side
    21,428.72x = 187,993,537.36
  5. Step 5: Solve for x
    x = 187,993,537.36/21,428.72
  6. Step 6: Final answer
    x = 8,772.97

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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.