Home / 31,280.28-46,916.10-7,905.30

Finding the Fourth Proportional to 31,280.28, 46,916.10 and 7,905.30

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Solution

The fourth proportional to 31,280.28, 46,916.10 and 7,905.30 is: 11,856.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,280.28 : 46,916.10 = 7,905.30 : x
  2. Step 2: Convert to fraction form
    31,280.28/46,916.10 = 7,905.30/x
  3. Step 3: Cross multiply
    31,280.28x = 46,916.10 × 7,905.30
  4. Step 4: Simplify right side
    31,280.28x = 370,885,845.33
  5. Step 5: Solve for x
    x = 370,885,845.33/31,280.28
  6. Step 6: Final answer
    x = 11,856.86

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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.