Home / 14,138.55-21,200.57-7,478.64

Finding the Fourth Proportional to 14,138.55, 21,200.57 and 7,478.64

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Solution

The fourth proportional to 14,138.55, 21,200.57 and 7,478.64 is: 11,214.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,138.55 : 21,200.57 = 7,478.64 : x
  2. Step 2: Convert to fraction form
    14,138.55/21,200.57 = 7,478.64/x
  3. Step 3: Cross multiply
    14,138.55x = 21,200.57 × 7,478.64
  4. Step 4: Simplify right side
    14,138.55x = 158,551,394.98
  5. Step 5: Solve for x
    x = 158,551,394.98/14,138.55
  6. Step 6: Final answer
    x = 11,214.12

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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.