Home / 19,771.88-27,295.14-15,285.48

Finding the Fourth Proportional to 19,771.88, 27,295.14 and 15,285.48

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Solution

The fourth proportional to 19,771.88, 27,295.14 and 15,285.48 is: 21,101.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,771.88 : 27,295.14 = 15,285.48 : x
  2. Step 2: Convert to fraction form
    19,771.88/27,295.14 = 15,285.48/x
  3. Step 3: Cross multiply
    19,771.88x = 27,295.14 × 15,285.48
  4. Step 4: Simplify right side
    19,771.88x = 417,219,316.57
  5. Step 5: Solve for x
    x = 417,219,316.57/19,771.88
  6. Step 6: Final answer
    x = 21,101.65

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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.