Home / 26,780.66-40,118.71-12,720.68

Finding the Fourth Proportional to 26,780.66, 40,118.71 and 12,720.68

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Solution

The fourth proportional to 26,780.66, 40,118.71 and 12,720.68 is: 19,056.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,780.66 : 40,118.71 = 12,720.68 : x
  2. Step 2: Convert to fraction form
    26,780.66/40,118.71 = 12,720.68/x
  3. Step 3: Cross multiply
    26,780.66x = 40,118.71 × 12,720.68
  4. Step 4: Simplify right side
    26,780.66x = 510,337,271.92
  5. Step 5: Solve for x
    x = 510,337,271.92/26,780.66
  6. Step 6: Final answer
    x = 19,056.19

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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.