Home / 19,380.19-26,749.77-11,427.71

Finding the Fourth Proportional to 19,380.19, 26,749.77 and 11,427.71

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Solution

The fourth proportional to 19,380.19, 26,749.77 and 11,427.71 is: 15,773.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,380.19 : 26,749.77 = 11,427.71 : x
  2. Step 2: Convert to fraction form
    19,380.19/26,749.77 = 11,427.71/x
  3. Step 3: Cross multiply
    19,380.19x = 26,749.77 × 11,427.71
  4. Step 4: Simplify right side
    19,380.19x = 305,688,614.13
  5. Step 5: Solve for x
    x = 305,688,614.13/19,380.19
  6. Step 6: Final answer
    x = 15,773.25

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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.