Home / 9,916.65-14,865.12-4,971.20

Finding the Fourth Proportional to 9,916.65, 14,865.12 and 4,971.20

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Solution

The fourth proportional to 9,916.65, 14,865.12 and 4,971.20 is: 7,451.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,916.65 : 14,865.12 = 4,971.20 : x
  2. Step 2: Convert to fraction form
    9,916.65/14,865.12 = 4,971.20/x
  3. Step 3: Cross multiply
    9,916.65x = 14,865.12 × 4,971.20
  4. Step 4: Simplify right side
    9,916.65x = 73,897,410.22
  5. Step 5: Solve for x
    x = 73,897,410.22/9,916.65
  6. Step 6: Final answer
    x = 7,451.85

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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.