Home / 20,653.49-30,980.20-5,862.55

Finding the Fourth Proportional to 20,653.49, 30,980.20 and 5,862.55

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Solution

The fourth proportional to 20,653.49, 30,980.20 and 5,862.55 is: 8,793.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.49 : 30,980.20 = 5,862.55 : x
  2. Step 2: Convert to fraction form
    20,653.49/30,980.20 = 5,862.55/x
  3. Step 3: Cross multiply
    20,653.49x = 30,980.20 × 5,862.55
  4. Step 4: Simplify right side
    20,653.49x = 181,622,971.51
  5. Step 5: Solve for x
    x = 181,622,971.51/20,653.49
  6. Step 6: Final answer
    x = 8,793.82

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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.