Home / 18,990.23-28,485.23-5,663.13

Finding the Fourth Proportional to 18,990.23, 28,485.23 and 5,663.13

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Solution

The fourth proportional to 18,990.23, 28,485.23 and 5,663.13 is: 8,494.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,990.23 : 28,485.23 = 5,663.13 : x
  2. Step 2: Convert to fraction form
    18,990.23/28,485.23 = 5,663.13/x
  3. Step 3: Cross multiply
    18,990.23x = 28,485.23 × 5,663.13
  4. Step 4: Simplify right side
    18,990.23x = 161,315,532.25
  5. Step 5: Solve for x
    x = 161,315,532.25/18,990.23
  6. Step 6: Final answer
    x = 8,494.66

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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.