Home / 13,990.23-20,985.42-5,225.07

Finding the Fourth Proportional to 13,990.23, 20,985.42 and 5,225.07

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Solution

The fourth proportional to 13,990.23, 20,985.42 and 5,225.07 is: 7,837.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.23 : 20,985.42 = 5,225.07 : x
  2. Step 2: Convert to fraction form
    13,990.23/20,985.42 = 5,225.07/x
  3. Step 3: Cross multiply
    13,990.23x = 20,985.42 × 5,225.07
  4. Step 4: Simplify right side
    13,990.23x = 109,650,288.48
  5. Step 5: Solve for x
    x = 109,650,288.48/13,990.23
  6. Step 6: Final answer
    x = 7,837.63

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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.