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Finding the Fourth Proportional to 15,653.72, 21,602.22 and 8,483.66

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Solution

The fourth proportional to 15,653.72, 21,602.22 and 8,483.66 is: 11,707.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,653.72 : 21,602.22 = 8,483.66 : x
  2. Step 2: Convert to fraction form
    15,653.72/21,602.22 = 8,483.66/x
  3. Step 3: Cross multiply
    15,653.72x = 21,602.22 × 8,483.66
  4. Step 4: Simplify right side
    15,653.72x = 183,265,889.73
  5. Step 5: Solve for x
    x = 183,265,889.73/15,653.72
  6. Step 6: Final answer
    x = 11,707.50

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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.