Home / 15,861.28-21,878.67-10,203.41

Finding the Fourth Proportional to 15,861.28, 21,878.67 and 10,203.41

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Solution

The fourth proportional to 15,861.28, 21,878.67 and 10,203.41 is: 14,074.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,861.28 : 21,878.67 = 10,203.41 : x
  2. Step 2: Convert to fraction form
    15,861.28/21,878.67 = 10,203.41/x
  3. Step 3: Cross multiply
    15,861.28x = 21,878.67 × 10,203.41
  4. Step 4: Simplify right side
    15,861.28x = 223,237,040.26
  5. Step 5: Solve for x
    x = 223,237,040.26/15,861.28
  6. Step 6: Final answer
    x = 14,074.34

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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.