Home / 14,157.20-21,230.40-4,293.20

Finding the Fourth Proportional to 14,157.20, 21,230.40 and 4,293.20

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Solution

The fourth proportional to 14,157.20, 21,230.40 and 4,293.20 is: 6,438.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,157.20 : 21,230.40 = 4,293.20 : x
  2. Step 2: Convert to fraction form
    14,157.20/21,230.40 = 4,293.20/x
  3. Step 3: Cross multiply
    14,157.20x = 21,230.40 × 4,293.20
  4. Step 4: Simplify right side
    14,157.20x = 91,146,353.28
  5. Step 5: Solve for x
    x = 91,146,353.28/14,157.20
  6. Step 6: Final answer
    x = 6,438.16

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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.