Home / 20,386.26-30,570.30-7,235.10

Finding the Fourth Proportional to 20,386.26, 30,570.30 and 7,235.10

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Solution

The fourth proportional to 20,386.26, 30,570.30 and 7,235.10 is: 10,849.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386.26 : 30,570.30 = 7,235.10 : x
  2. Step 2: Convert to fraction form
    20,386.26/30,570.30 = 7,235.10/x
  3. Step 3: Cross multiply
    20,386.26x = 30,570.30 × 7,235.10
  4. Step 4: Simplify right side
    20,386.26x = 221,179,177.53
  5. Step 5: Solve for x
    x = 221,179,177.53/20,386.26
  6. Step 6: Final answer
    x = 10,849.42

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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.