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Finding the Fourth Proportional to 29,296.40, 40,428.50 and 15,867.56

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Solution

The fourth proportional to 29,296.40, 40,428.50 and 15,867.56 is: 21,896.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,296.40 : 40,428.50 = 15,867.56 : x
  2. Step 2: Convert to fraction form
    29,296.40/40,428.50 = 15,867.56/x
  3. Step 3: Cross multiply
    29,296.40x = 40,428.50 × 15,867.56
  4. Step 4: Simplify right side
    29,296.40x = 641,501,649.46
  5. Step 5: Solve for x
    x = 641,501,649.46/29,296.40
  6. Step 6: Final answer
    x = 21,896.94

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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.