Home / 14,138.05-21,209.28-4,276.30

Finding the Fourth Proportional to 14,138.05, 21,209.28 and 4,276.30

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Solution

The fourth proportional to 14,138.05, 21,209.28 and 4,276.30 is: 6,415.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,138.05 : 21,209.28 = 4,276.30 : x
  2. Step 2: Convert to fraction form
    14,138.05/21,209.28 = 4,276.30/x
  3. Step 3: Cross multiply
    14,138.05x = 21,209.28 × 4,276.30
  4. Step 4: Simplify right side
    14,138.05x = 90,697,244.06
  5. Step 5: Solve for x
    x = 90,697,244.06/14,138.05
  6. Step 6: Final answer
    x = 6,415.12

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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.