Home / 20,927.56-28,887.61-13,856.26

Finding the Fourth Proportional to 20,927.56, 28,887.61 and 13,856.26

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Solution

The fourth proportional to 20,927.56, 28,887.61 and 13,856.26 is: 19,126.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.56 : 28,887.61 = 13,856.26 : x
  2. Step 2: Convert to fraction form
    20,927.56/28,887.61 = 13,856.26/x
  3. Step 3: Cross multiply
    20,927.56x = 28,887.61 × 13,856.26
  4. Step 4: Simplify right side
    20,927.56x = 400,274,055.86
  5. Step 5: Solve for x
    x = 400,274,055.86/20,927.56
  6. Step 6: Final answer
    x = 19,126.65

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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.