Home / 15,443.88-21,314.50-8,729.80

Finding the Fourth Proportional to 15,443.88, 21,314.50 and 8,729.80

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Solution

The fourth proportional to 15,443.88, 21,314.50 and 8,729.80 is: 12,048.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,443.88 : 21,314.50 = 8,729.80 : x
  2. Step 2: Convert to fraction form
    15,443.88/21,314.50 = 8,729.80/x
  3. Step 3: Cross multiply
    15,443.88x = 21,314.50 × 8,729.80
  4. Step 4: Simplify right side
    15,443.88x = 186,071,322.10
  5. Step 5: Solve for x
    x = 186,071,322.10/15,443.88
  6. Step 6: Final answer
    x = 12,048.22

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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.