Home / 29,295.78-40,428.30-15,867.18

Finding the Fourth Proportional to 29,295.78, 40,428.30 and 15,867.18

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Solution

The fourth proportional to 29,295.78, 40,428.30 and 15,867.18 is: 21,896.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,295.78 : 40,428.30 = 15,867.18 : x
  2. Step 2: Convert to fraction form
    29,295.78/40,428.30 = 15,867.18/x
  3. Step 3: Cross multiply
    29,295.78x = 40,428.30 × 15,867.18
  4. Step 4: Simplify right side
    29,295.78x = 641,483,113.19
  5. Step 5: Solve for x
    x = 641,483,113.19/29,295.78
  6. Step 6: Final answer
    x = 21,896.78

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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.