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Finding the Fourth Proportional to 15,602.31, 21,531.23 and 8,888.22

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Solution

The fourth proportional to 15,602.31, 21,531.23 and 8,888.22 is: 12,265.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,602.31 : 21,531.23 = 8,888.22 : x
  2. Step 2: Convert to fraction form
    15,602.31/21,531.23 = 8,888.22/x
  3. Step 3: Cross multiply
    15,602.31x = 21,531.23 × 8,888.22
  4. Step 4: Simplify right side
    15,602.31x = 191,374,309.11
  5. Step 5: Solve for x
    x = 191,374,309.11/15,602.31
  6. Step 6: Final answer
    x = 12,265.77

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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.