Home / 14,088.32-21,135.99-4,227.78

Finding the Fourth Proportional to 14,088.32, 21,135.99 and 4,227.78

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Solution

The fourth proportional to 14,088.32, 21,135.99 and 4,227.78 is: 6,342.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,088.32 : 21,135.99 = 4,227.78 : x
  2. Step 2: Convert to fraction form
    14,088.32/21,135.99 = 4,227.78/x
  3. Step 3: Cross multiply
    14,088.32x = 21,135.99 × 4,227.78
  4. Step 4: Simplify right side
    14,088.32x = 89,358,315.80
  5. Step 5: Solve for x
    x = 89,358,315.80/14,088.32
  6. Step 6: Final answer
    x = 6,342.72

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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.