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Finding the Fourth Proportional to 9,978.81, 14,931.12 and 6,263.65

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Solution

The fourth proportional to 9,978.81, 14,931.12 and 6,263.65 is: 9,372.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,978.81 : 14,931.12 = 6,263.65 : x
  2. Step 2: Convert to fraction form
    9,978.81/14,931.12 = 6,263.65/x
  3. Step 3: Cross multiply
    9,978.81x = 14,931.12 × 6,263.65
  4. Step 4: Simplify right side
    9,978.81x = 93,523,309.79
  5. Step 5: Solve for x
    x = 93,523,309.79/9,978.81
  6. Step 6: Final answer
    x = 9,372.19

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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.