Home / 15,638.34-21,579.27-8,922.66

Finding the Fourth Proportional to 15,638.34, 21,579.27 and 8,922.66

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Solution

The fourth proportional to 15,638.34, 21,579.27 and 8,922.66 is: 12,312.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,638.34 : 21,579.27 = 8,922.66 : x
  2. Step 2: Convert to fraction form
    15,638.34/21,579.27 = 8,922.66/x
  3. Step 3: Cross multiply
    15,638.34x = 21,579.27 × 8,922.66
  4. Step 4: Simplify right side
    15,638.34x = 192,544,437.61
  5. Step 5: Solve for x
    x = 192,544,437.61/15,638.34
  6. Step 6: Final answer
    x = 12,312.33

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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.