Home / 38,145.86-57,221.31-13,188.32

Finding the Fourth Proportional to 38,145.86, 57,221.31 and 13,188.32

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Solution

The fourth proportional to 38,145.86, 57,221.31 and 13,188.32 is: 19,783.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,145.86 : 57,221.31 = 13,188.32 : x
  2. Step 2: Convert to fraction form
    38,145.86/57,221.31 = 13,188.32/x
  3. Step 3: Cross multiply
    38,145.86x = 57,221.31 × 13,188.32
  4. Step 4: Simplify right side
    38,145.86x = 754,652,947.10
  5. Step 5: Solve for x
    x = 754,652,947.10/38,145.86
  6. Step 6: Final answer
    x = 19,783.35

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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.