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Finding the Fourth Proportional to 26,598.90, 39,904.20 and 7,880.40

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Solution

The fourth proportional to 26,598.90, 39,904.20 and 7,880.40 is: 11,822.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,598.90 : 39,904.20 = 7,880.40 : x
  2. Step 2: Convert to fraction form
    26,598.90/39,904.20 = 7,880.40/x
  3. Step 3: Cross multiply
    26,598.90x = 39,904.20 × 7,880.40
  4. Step 4: Simplify right side
    26,598.90x = 314,461,057.68
  5. Step 5: Solve for x
    x = 314,461,057.68/26,598.90
  6. Step 6: Final answer
    x = 11,822.33

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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.