Home / 27,339.12-37,731.42-15,405.30

Finding the Fourth Proportional to 27,339.12, 37,731.42 and 15,405.30

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Solution

The fourth proportional to 27,339.12, 37,731.42 and 15,405.30 is: 21,261.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,339.12 : 37,731.42 = 15,405.30 : x
  2. Step 2: Convert to fraction form
    27,339.12/37,731.42 = 15,405.30/x
  3. Step 3: Cross multiply
    27,339.12x = 37,731.42 × 15,405.30
  4. Step 4: Simplify right side
    27,339.12x = 581,263,844.53
  5. Step 5: Solve for x
    x = 581,263,844.53/27,339.12
  6. Step 6: Final answer
    x = 21,261.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.