Home / 26,820.59-40,214.48-12,780.05

Finding the Fourth Proportional to 26,820.59, 40,214.48 and 12,780.05

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Solution

The fourth proportional to 26,820.59, 40,214.48 and 12,780.05 is: 19,162.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,820.59 : 40,214.48 = 12,780.05 : x
  2. Step 2: Convert to fraction form
    26,820.59/40,214.48 = 12,780.05/x
  3. Step 3: Cross multiply
    26,820.59x = 40,214.48 × 12,780.05
  4. Step 4: Simplify right side
    26,820.59x = 513,942,800.15
  5. Step 5: Solve for x
    x = 513,942,800.15/26,820.59
  6. Step 6: Final answer
    x = 19,162.25

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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.