Home / 14,280.20-21,416.52-6,487.28

Finding the Fourth Proportional to 14,280.20, 21,416.52 and 6,487.28

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Solution

The fourth proportional to 14,280.20, 21,416.52 and 6,487.28 is: 9,729.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,280.20 : 21,416.52 = 6,487.28 : x
  2. Step 2: Convert to fraction form
    14,280.20/21,416.52 = 6,487.28/x
  3. Step 3: Cross multiply
    14,280.20x = 21,416.52 × 6,487.28
  4. Step 4: Simplify right side
    14,280.20x = 138,934,961.87
  5. Step 5: Solve for x
    x = 138,934,961.87/14,280.20
  6. Step 6: Final answer
    x = 9,729.20

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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.