Home / 19,550.16-26,978.55-11,587.66

Finding the Fourth Proportional to 19,550.16, 26,978.55 and 11,587.66

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Solution

The fourth proportional to 19,550.16, 26,978.55 and 11,587.66 is: 15,990.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,550.16 : 26,978.55 = 11,587.66 : x
  2. Step 2: Convert to fraction form
    19,550.16/26,978.55 = 11,587.66/x
  3. Step 3: Cross multiply
    19,550.16x = 26,978.55 × 11,587.66
  4. Step 4: Simplify right side
    19,550.16x = 312,618,264.69
  5. Step 5: Solve for x
    x = 312,618,264.69/19,550.16
  6. Step 6: Final answer
    x = 15,990.57

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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.