Home / 20,641.08-28,485.06-11,688.54

Finding the Fourth Proportional to 20,641.08, 28,485.06 and 11,688.54

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Solution

The fourth proportional to 20,641.08, 28,485.06 and 11,688.54 is: 16,130.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,641.08 : 28,485.06 = 11,688.54 : x
  2. Step 2: Convert to fraction form
    20,641.08/28,485.06 = 11,688.54/x
  3. Step 3: Cross multiply
    20,641.08x = 28,485.06 × 11,688.54
  4. Step 4: Simplify right side
    20,641.08x = 332,948,763.21
  5. Step 5: Solve for x
    x = 332,948,763.21/20,641.08
  6. Step 6: Final answer
    x = 16,130.39

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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.