Home / 38,278.32-57,417.52-20,858.88

Finding the Fourth Proportional to 38,278.32, 57,417.52 and 20,858.88

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Solution

The fourth proportional to 38,278.32, 57,417.52 and 20,858.88 is: 31,288.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,278.32 : 57,417.52 = 20,858.88 : x
  2. Step 2: Convert to fraction form
    38,278.32/57,417.52 = 20,858.88/x
  3. Step 3: Cross multiply
    38,278.32x = 57,417.52 × 20,858.88
  4. Step 4: Simplify right side
    38,278.32x = 1,197,665,159.58
  5. Step 5: Solve for x
    x = 1,197,665,159.58/38,278.32
  6. Step 6: Final answer
    x = 31,288.34

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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.