Home / 38,421.32-57,555.30-18,639.86

Finding the Fourth Proportional to 38,421.32, 57,555.30 and 18,639.86

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Solution

The fourth proportional to 38,421.32, 57,555.30 and 18,639.86 is: 27,922.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,421.32 : 57,555.30 = 18,639.86 : x
  2. Step 2: Convert to fraction form
    38,421.32/57,555.30 = 18,639.86/x
  3. Step 3: Cross multiply
    38,421.32x = 57,555.30 × 18,639.86
  4. Step 4: Simplify right side
    38,421.32x = 1,072,822,734.26
  5. Step 5: Solve for x
    x = 1,072,822,734.26/38,421.32
  6. Step 6: Final answer
    x = 27,922.59

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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.