Home / 15,256.95-21,055.10-8,542.86

Finding the Fourth Proportional to 15,256.95, 21,055.10 and 8,542.86

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Solution

The fourth proportional to 15,256.95, 21,055.10 and 8,542.86 is: 11,789.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,256.95 : 21,055.10 = 8,542.86 : x
  2. Step 2: Convert to fraction form
    15,256.95/21,055.10 = 8,542.86/x
  3. Step 3: Cross multiply
    15,256.95x = 21,055.10 × 8,542.86
  4. Step 4: Simplify right side
    15,256.95x = 179,870,771.59
  5. Step 5: Solve for x
    x = 179,870,771.59/15,256.95
  6. Step 6: Final answer
    x = 11,789.43

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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.