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Finding the Fourth Proportional to 19,221, 26,506.71 and 12,498.93

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Solution

The fourth proportional to 19,221, 26,506.71 and 12,498.93 is: 17,236.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,221 : 26,506.71 = 12,498.93 : x
  2. Step 2: Convert to fraction form
    19,221/26,506.71 = 12,498.93/x
  3. Step 3: Cross multiply
    19,221x = 26,506.71 × 12,498.93
  4. Step 4: Simplify right side
    19,221x = 331,305,512.82
  5. Step 5: Solve for x
    x = 331,305,512.82/19,221
  6. Step 6: Final answer
    x = 17,236.64

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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.