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Finding the Fourth Proportional to 26,875.76, 40,311.48 and 16,986.20

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Solution

The fourth proportional to 26,875.76, 40,311.48 and 16,986.20 is: 25,477.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,875.76 : 40,311.48 = 16,986.20 : x
  2. Step 2: Convert to fraction form
    26,875.76/40,311.48 = 16,986.20/x
  3. Step 3: Cross multiply
    26,875.76x = 40,311.48 × 16,986.20
  4. Step 4: Simplify right side
    26,875.76x = 684,738,861.58
  5. Step 5: Solve for x
    x = 684,738,861.58/26,875.76
  6. Step 6: Final answer
    x = 25,477.93

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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.