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Finding the Fourth Proportional to 9,979.50, 14,970.62 and 7,903.37

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Solution

The fourth proportional to 9,979.50, 14,970.62 and 7,903.37 is: 11,856.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,979.50 : 14,970.62 = 7,903.37 : x
  2. Step 2: Convert to fraction form
    9,979.50/14,970.62 = 7,903.37/x
  3. Step 3: Cross multiply
    9,979.50x = 14,970.62 × 7,903.37
  4. Step 4: Simplify right side
    9,979.50x = 118,318,406.17
  5. Step 5: Solve for x
    x = 118,318,406.17/9,979.50
  6. Step 6: Final answer
    x = 11,856.14

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1.5x scale

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.