Home / 22,191.02-30,623.53-13,238.90

Finding the Fourth Proportional to 22,191.02, 30,623.53 and 13,238.90

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Solution

The fourth proportional to 22,191.02, 30,623.53 and 13,238.90 is: 18,269.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,191.02 : 30,623.53 = 13,238.90 : x
  2. Step 2: Convert to fraction form
    22,191.02/30,623.53 = 13,238.90/x
  3. Step 3: Cross multiply
    22,191.02x = 30,623.53 × 13,238.90
  4. Step 4: Simplify right side
    22,191.02x = 405,421,851.32
  5. Step 5: Solve for x
    x = 405,421,851.32/22,191.02
  6. Step 6: Final answer
    x = 18,269.64

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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.