Home / 30,445.64-42,047.94-20,910.66

Finding the Fourth Proportional to 30,445.64, 42,047.94 and 20,910.66

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Solution

The fourth proportional to 30,445.64, 42,047.94 and 20,910.66 is: 28,879.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,445.64 : 42,047.94 = 20,910.66 : x
  2. Step 2: Convert to fraction form
    30,445.64/42,047.94 = 20,910.66/x
  3. Step 3: Cross multiply
    30,445.64x = 42,047.94 × 20,910.66
  4. Step 4: Simplify right side
    30,445.64x = 879,250,177.04
  5. Step 5: Solve for x
    x = 879,250,177.04/30,445.64
  6. Step 6: Final answer
    x = 28,879.35

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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.