Home / 20,784.02-31,185.75-12,026.30

Finding the Fourth Proportional to 20,784.02, 31,185.75 and 12,026.30

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Solution

The fourth proportional to 20,784.02, 31,185.75 and 12,026.30 is: 18,045.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784.02 : 31,185.75 = 12,026.30 : x
  2. Step 2: Convert to fraction form
    20,784.02/31,185.75 = 12,026.30/x
  3. Step 3: Cross multiply
    20,784.02x = 31,185.75 × 12,026.30
  4. Step 4: Simplify right side
    20,784.02x = 375,049,185.23
  5. Step 5: Solve for x
    x = 375,049,185.23/20,784.02
  6. Step 6: Final answer
    x = 18,045.07

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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.