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Finding the Fourth Proportional to 26,912.40, 40,320.60 and 13,030.80

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Solution

The fourth proportional to 26,912.40, 40,320.60 and 13,030.80 is: 19,522.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,912.40 : 40,320.60 = 13,030.80 : x
  2. Step 2: Convert to fraction form
    26,912.40/40,320.60 = 13,030.80/x
  3. Step 3: Cross multiply
    26,912.40x = 40,320.60 × 13,030.80
  4. Step 4: Simplify right side
    26,912.40x = 525,409,674.48
  5. Step 5: Solve for x
    x = 525,409,674.48/26,912.40
  6. Step 6: Final answer
    x = 19,522.96

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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.