Home / 15,496.31-21,384.75-8,422.76

Finding the Fourth Proportional to 15,496.31, 21,384.75 and 8,422.76

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Solution

The fourth proportional to 15,496.31, 21,384.75 and 8,422.76 is: 11,623.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,496.31 : 21,384.75 = 8,422.76 : x
  2. Step 2: Convert to fraction form
    15,496.31/21,384.75 = 8,422.76/x
  3. Step 3: Cross multiply
    15,496.31x = 21,384.75 × 8,422.76
  4. Step 4: Simplify right side
    15,496.31x = 180,118,701.96
  5. Step 5: Solve for x
    x = 180,118,701.96/15,496.31
  6. Step 6: Final answer
    x = 11,623.33

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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.