Home / 30,079.02-45,093.16-18,961.21

Finding the Fourth Proportional to 30,079.02, 45,093.16 and 18,961.21

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Solution

The fourth proportional to 30,079.02, 45,093.16 and 18,961.21 is: 28,425.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,079.02 : 45,093.16 = 18,961.21 : x
  2. Step 2: Convert to fraction form
    30,079.02/45,093.16 = 18,961.21/x
  3. Step 3: Cross multiply
    30,079.02x = 45,093.16 × 18,961.21
  4. Step 4: Simplify right side
    30,079.02x = 855,020,876.32
  5. Step 5: Solve for x
    x = 855,020,876.32/30,079.02
  6. Step 6: Final answer
    x = 28,425.82

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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.