Home / 38,272.91-57,435.47-13,312.70

Finding the Fourth Proportional to 38,272.91, 57,435.47 and 13,312.70

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Solution

The fourth proportional to 38,272.91, 57,435.47 and 13,312.70 is: 19,978.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,272.91 : 57,435.47 = 13,312.70 : x
  2. Step 2: Convert to fraction form
    38,272.91/57,435.47 = 13,312.70/x
  3. Step 3: Cross multiply
    38,272.91x = 57,435.47 × 13,312.70
  4. Step 4: Simplify right side
    38,272.91x = 764,621,093.03
  5. Step 5: Solve for x
    x = 764,621,093.03/38,272.91
  6. Step 6: Final answer
    x = 19,978.13

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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.