Home / 12,887.91-19,334.70-4,123.71

Finding the Fourth Proportional to 12,887.91, 19,334.70 and 4,123.71

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Solution

The fourth proportional to 12,887.91, 19,334.70 and 4,123.71 is: 6,186.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887.91 : 19,334.70 = 4,123.71 : x
  2. Step 2: Convert to fraction form
    12,887.91/19,334.70 = 4,123.71/x
  3. Step 3: Cross multiply
    12,887.91x = 19,334.70 × 4,123.71
  4. Step 4: Simplify right side
    12,887.91x = 79,730,695.74
  5. Step 5: Solve for x
    x = 79,730,695.74/12,887.91
  6. Step 6: Final answer
    x = 6,186.47

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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.