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Finding the Fourth Proportional to 26,605.40, 39,904.90 and 11,021.40

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Solution

The fourth proportional to 26,605.40, 39,904.90 and 11,021.40 is: 16,530.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,605.40 : 39,904.90 = 11,021.40 : x
  2. Step 2: Convert to fraction form
    26,605.40/39,904.90 = 11,021.40/x
  3. Step 3: Cross multiply
    26,605.40x = 39,904.90 × 11,021.40
  4. Step 4: Simplify right side
    26,605.40x = 439,807,864.86
  5. Step 5: Solve for x
    x = 439,807,864.86/26,605.40
  6. Step 6: Final answer
    x = 16,530.77

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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.