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Finding the Fourth Proportional to 26,698.80, 40,010.94 and 12,653.40

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Solution

The fourth proportional to 26,698.80, 40,010.94 and 12,653.40 is: 18,962.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,698.80 : 40,010.94 = 12,653.40 : x
  2. Step 2: Convert to fraction form
    26,698.80/40,010.94 = 12,653.40/x
  3. Step 3: Cross multiply
    26,698.80x = 40,010.94 × 12,653.40
  4. Step 4: Simplify right side
    26,698.80x = 506,274,428.20
  5. Step 5: Solve for x
    x = 506,274,428.20/26,698.80
  6. Step 6: Final answer
    x = 18,962.44

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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.