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Finding the Fourth Proportional to 15,953.51, 22,001.51 and 9,985.73

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Solution

The fourth proportional to 15,953.51, 22,001.51 and 9,985.73 is: 13,771.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,953.51 : 22,001.51 = 9,985.73 : x
  2. Step 2: Convert to fraction form
    15,953.51/22,001.51 = 9,985.73/x
  3. Step 3: Cross multiply
    15,953.51x = 22,001.51 × 9,985.73
  4. Step 4: Simplify right side
    15,953.51x = 219,701,053.41
  5. Step 5: Solve for x
    x = 219,701,053.41/15,953.51
  6. Step 6: Final answer
    x = 13,771.33

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Similar ratio
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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.