Home / 21,236.61-31,869.26-8,088.63

Finding the Fourth Proportional to 21,236.61, 31,869.26 and 8,088.63

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Solution

The fourth proportional to 21,236.61, 31,869.26 and 8,088.63 is: 12,138.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,236.61 : 31,869.26 = 8,088.63 : x
  2. Step 2: Convert to fraction form
    21,236.61/31,869.26 = 8,088.63/x
  3. Step 3: Cross multiply
    21,236.61x = 31,869.26 × 8,088.63
  4. Step 4: Simplify right side
    21,236.61x = 257,778,837.29
  5. Step 5: Solve for x
    x = 257,778,837.29/21,236.61
  6. Step 6: Final answer
    x = 12,138.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.