Home / 15,865.98-21,884.79-12,503.58

Finding the Fourth Proportional to 15,865.98, 21,884.79 and 12,503.58

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Solution

The fourth proportional to 15,865.98, 21,884.79 and 12,503.58 is: 17,246.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,865.98 : 21,884.79 = 12,503.58 : x
  2. Step 2: Convert to fraction form
    15,865.98/21,884.79 = 12,503.58/x
  3. Step 3: Cross multiply
    15,865.98x = 21,884.79 × 12,503.58
  4. Step 4: Simplify right side
    15,865.98x = 273,638,222.55
  5. Step 5: Solve for x
    x = 273,638,222.55/15,865.98
  6. Step 6: Final answer
    x = 17,246.85

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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.