Home / 15,321.60-21,136.86-9,652.41

Finding the Fourth Proportional to 15,321.60, 21,136.86 and 9,652.41

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Solution

The fourth proportional to 15,321.60, 21,136.86 and 9,652.41 is: 13,315.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,321.60 : 21,136.86 = 9,652.41 : x
  2. Step 2: Convert to fraction form
    15,321.60/21,136.86 = 9,652.41/x
  3. Step 3: Cross multiply
    15,321.60x = 21,136.86 × 9,652.41
  4. Step 4: Simplify right side
    15,321.60x = 204,021,638.83
  5. Step 5: Solve for x
    x = 204,021,638.83/15,321.60
  6. Step 6: Final answer
    x = 13,315.95

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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.