Home / 14,123.67-19,490.49-7,663.21

Finding the Fourth Proportional to 14,123.67, 19,490.49 and 7,663.21

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Solution

The fourth proportional to 14,123.67, 19,490.49 and 7,663.21 is: 10,575.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,123.67 : 19,490.49 = 7,663.21 : x
  2. Step 2: Convert to fraction form
    14,123.67/19,490.49 = 7,663.21/x
  3. Step 3: Cross multiply
    14,123.67x = 19,490.49 × 7,663.21
  4. Step 4: Simplify right side
    14,123.67x = 149,359,717.87
  5. Step 5: Solve for x
    x = 149,359,717.87/14,123.67
  6. Step 6: Final answer
    x = 10,575.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.