Home / 26,686.74-40,029.20-12,653.49

Finding the Fourth Proportional to 26,686.74, 40,029.20 and 12,653.49

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Solution

The fourth proportional to 26,686.74, 40,029.20 and 12,653.49 is: 18,979.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,686.74 : 40,029.20 = 12,653.49 : x
  2. Step 2: Convert to fraction form
    26,686.74/40,029.20 = 12,653.49/x
  3. Step 3: Cross multiply
    26,686.74x = 40,029.20 × 12,653.49
  4. Step 4: Simplify right side
    26,686.74x = 506,509,113.54
  5. Step 5: Solve for x
    x = 506,509,113.54/26,686.74
  6. Step 6: Final answer
    x = 18,979.80

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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.