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Finding the Fourth Proportional to 26,407.20, 39,609.36 and 8,875.20

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Solution

The fourth proportional to 26,407.20, 39,609.36 and 8,875.20 is: 13,312.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,407.20 : 39,609.36 = 8,875.20 : x
  2. Step 2: Convert to fraction form
    26,407.20/39,609.36 = 8,875.20/x
  3. Step 3: Cross multiply
    26,407.20x = 39,609.36 × 8,875.20
  4. Step 4: Simplify right side
    26,407.20x = 351,540,991.87
  5. Step 5: Solve for x
    x = 351,540,991.87/26,407.20
  6. Step 6: Final answer
    x = 13,312.32

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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.