Home / 27,090.15-40,625.12-9,315.78

Finding the Fourth Proportional to 27,090.15, 40,625.12 and 9,315.78

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Solution

The fourth proportional to 27,090.15, 40,625.12 and 9,315.78 is: 13,970.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,090.15 : 40,625.12 = 9,315.78 : x
  2. Step 2: Convert to fraction form
    27,090.15/40,625.12 = 9,315.78/x
  3. Step 3: Cross multiply
    27,090.15x = 40,625.12 × 9,315.78
  4. Step 4: Simplify right side
    27,090.15x = 378,454,633.81
  5. Step 5: Solve for x
    x = 378,454,633.81/27,090.15
  6. Step 6: Final answer
    x = 13,970.19

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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.