Home / 30,867.26-42,595.95-18,120.24

Finding the Fourth Proportional to 30,867.26, 42,595.95 and 18,120.24

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Solution

The fourth proportional to 30,867.26, 42,595.95 and 18,120.24 is: 25,005.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,867.26 : 42,595.95 = 18,120.24 : x
  2. Step 2: Convert to fraction form
    30,867.26/42,595.95 = 18,120.24/x
  3. Step 3: Cross multiply
    30,867.26x = 42,595.95 × 18,120.24
  4. Step 4: Simplify right side
    30,867.26x = 771,848,879.83
  5. Step 5: Solve for x
    x = 771,848,879.83/30,867.26
  6. Step 6: Final answer
    x = 25,005.42

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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.