Home / 19,988.80-27,585.44-11,493.68

Finding the Fourth Proportional to 19,988.80, 27,585.44 and 11,493.68

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Solution

The fourth proportional to 19,988.80, 27,585.44 and 11,493.68 is: 15,861.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,988.80 : 27,585.44 = 11,493.68 : x
  2. Step 2: Convert to fraction form
    19,988.80/27,585.44 = 11,493.68/x
  3. Step 3: Cross multiply
    19,988.80x = 27,585.44 × 11,493.68
  4. Step 4: Simplify right side
    19,988.80x = 317,058,220.02
  5. Step 5: Solve for x
    x = 317,058,220.02/19,988.80
  6. Step 6: Final answer
    x = 15,861.79

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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.