Home / 15,321.12-21,144.67-10,295.80

Finding the Fourth Proportional to 15,321.12, 21,144.67 and 10,295.80

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Solution

The fourth proportional to 15,321.12, 21,144.67 and 10,295.80 is: 14,209.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,321.12 : 21,144.67 = 10,295.80 : x
  2. Step 2: Convert to fraction form
    15,321.12/21,144.67 = 10,295.80/x
  3. Step 3: Cross multiply
    15,321.12x = 21,144.67 × 10,295.80
  4. Step 4: Simplify right side
    15,321.12x = 217,701,303.21
  5. Step 5: Solve for x
    x = 217,701,303.21/15,321.12
  6. Step 6: Final answer
    x = 14,209.23

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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.