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Finding the Fourth Proportional to 19,208.76, 26,502 and 15,162.82

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Solution

The fourth proportional to 19,208.76, 26,502 and 15,162.82 is: 20,919.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,208.76 : 26,502 = 15,162.82 : x
  2. Step 2: Convert to fraction form
    19,208.76/26,502 = 15,162.82/x
  3. Step 3: Cross multiply
    19,208.76x = 26,502 × 15,162.82
  4. Step 4: Simplify right side
    19,208.76x = 401,845,055.64
  5. Step 5: Solve for x
    x = 401,845,055.64/19,208.76
  6. Step 6: Final answer
    x = 20,919.89

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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.