Home / 14,123.20-19,489.36-7,749.63

Finding the Fourth Proportional to 14,123.20, 19,489.36 and 7,749.63

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Solution

The fourth proportional to 14,123.20, 19,489.36 and 7,749.63 is: 10,694.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,123.20 : 19,489.36 = 7,749.63 : x
  2. Step 2: Convert to fraction form
    14,123.20/19,489.36 = 7,749.63/x
  3. Step 3: Cross multiply
    14,123.20x = 19,489.36 × 7,749.63
  4. Step 4: Simplify right side
    14,123.20x = 151,035,411.71
  5. Step 5: Solve for x
    x = 151,035,411.71/14,123.20
  6. Step 6: Final answer
    x = 10,694.14

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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.