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Finding the Fourth Proportional to 26,638.08, 39,946.72 and 9,989.02

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Solution

The fourth proportional to 26,638.08, 39,946.72 and 9,989.02 is: 14,979.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,638.08 : 39,946.72 = 9,989.02 : x
  2. Step 2: Convert to fraction form
    26,638.08/39,946.72 = 9,989.02/x
  3. Step 3: Cross multiply
    26,638.08x = 39,946.72 × 9,989.02
  4. Step 4: Simplify right side
    26,638.08x = 399,028,585.01
  5. Step 5: Solve for x
    x = 399,028,585.01/26,638.08
  6. Step 6: Final answer
    x = 14,979.63

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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.