Home / 20,528.23-28,328.23-11,574.60

Finding the Fourth Proportional to 20,528.23, 28,328.23 and 11,574.60

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Solution

The fourth proportional to 20,528.23, 28,328.23 and 11,574.60 is: 15,972.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,528.23 : 28,328.23 = 11,574.60 : x
  2. Step 2: Convert to fraction form
    20,528.23/28,328.23 = 11,574.60/x
  3. Step 3: Cross multiply
    20,528.23x = 28,328.23 × 11,574.60
  4. Step 4: Simplify right side
    20,528.23x = 327,887,930.96
  5. Step 5: Solve for x
    x = 327,887,930.96/20,528.23
  6. Step 6: Final answer
    x = 15,972.54

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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.