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Finding the Fourth Proportional to 26,938.40, 40,407.60 and 17,607.20

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Solution

The fourth proportional to 26,938.40, 40,407.60 and 17,607.20 is: 26,410.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,938.40 : 40,407.60 = 17,607.20 : x
  2. Step 2: Convert to fraction form
    26,938.40/40,407.60 = 17,607.20/x
  3. Step 3: Cross multiply
    26,938.40x = 40,407.60 × 17,607.20
  4. Step 4: Simplify right side
    26,938.40x = 711,464,694.72
  5. Step 5: Solve for x
    x = 711,464,694.72/26,938.40
  6. Step 6: Final answer
    x = 26,410.80

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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.