Home / 19,312.20-28,961.00-8,916.66

Finding the Fourth Proportional to 19,312.20, 28,961.00 and 8,916.66

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Solution

The fourth proportional to 19,312.20, 28,961.00 and 8,916.66 is: 13,371.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,312.20 : 28,961.00 = 8,916.66 : x
  2. Step 2: Convert to fraction form
    19,312.20/28,961.00 = 8,916.66/x
  3. Step 3: Cross multiply
    19,312.20x = 28,961.00 × 8,916.66
  4. Step 4: Simplify right side
    19,312.20x = 258,235,412.55
  5. Step 5: Solve for x
    x = 258,235,412.55/19,312.20
  6. Step 6: Final answer
    x = 13,371.62

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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.