Home / 21,031.65-31,546.79-8,548.32

Finding the Fourth Proportional to 21,031.65, 31,546.79 and 8,548.32

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Solution

The fourth proportional to 21,031.65, 31,546.79 and 8,548.32 is: 12,822.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,031.65 : 31,546.79 = 8,548.32 : x
  2. Step 2: Convert to fraction form
    21,031.65/31,546.79 = 8,548.32/x
  3. Step 3: Cross multiply
    21,031.65x = 31,546.79 × 8,548.32
  4. Step 4: Simplify right side
    21,031.65x = 269,672,143.19
  5. Step 5: Solve for x
    x = 269,672,143.19/21,031.65
  6. Step 6: Final answer
    x = 12,822.21

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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.