Home / 20,031.14-27,640.53-11,077.40

Finding the Fourth Proportional to 20,031.14, 27,640.53 and 11,077.40

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Solution

The fourth proportional to 20,031.14, 27,640.53 and 11,077.40 is: 15,285.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,031.14 : 27,640.53 = 11,077.40 : x
  2. Step 2: Convert to fraction form
    20,031.14/27,640.53 = 11,077.40/x
  3. Step 3: Cross multiply
    20,031.14x = 27,640.53 × 11,077.40
  4. Step 4: Simplify right side
    20,031.14x = 306,185,276.12
  5. Step 5: Solve for x
    x = 306,185,276.12/20,031.14
  6. Step 6: Final answer
    x = 15,285.46

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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.