Home / 26,780.16-40,117.96-12,720.18

Finding the Fourth Proportional to 26,780.16, 40,117.96 and 12,720.18

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Solution

The fourth proportional to 26,780.16, 40,117.96 and 12,720.18 is: 19,055.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,780.16 : 40,117.96 = 12,720.18 : x
  2. Step 2: Convert to fraction form
    26,780.16/40,117.96 = 12,720.18/x
  3. Step 3: Cross multiply
    26,780.16x = 40,117.96 × 12,720.18
  4. Step 4: Simplify right side
    26,780.16x = 510,307,672.43
  5. Step 5: Solve for x
    x = 510,307,672.43/26,780.16
  6. Step 6: Final answer
    x = 19,055.44

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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.