Home / 14,138.30-21,210.78-4,277.66

Finding the Fourth Proportional to 14,138.30, 21,210.78 and 4,277.66

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Solution

The fourth proportional to 14,138.30, 21,210.78 and 4,277.66 is: 6,417.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,138.30 : 21,210.78 = 4,277.66 : x
  2. Step 2: Convert to fraction form
    14,138.30/21,210.78 = 4,277.66/x
  3. Step 3: Cross multiply
    14,138.30x = 21,210.78 × 4,277.66
  4. Step 4: Simplify right side
    14,138.30x = 90,732,505.17
  5. Step 5: Solve for x
    x = 90,732,505.17/14,138.30
  6. Step 6: Final answer
    x = 6,417.50

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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.