Home / 15,314.99-21,139.27-8,943.30

Finding the Fourth Proportional to 15,314.99, 21,139.27 and 8,943.30

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Solution

The fourth proportional to 15,314.99, 21,139.27 and 8,943.30 is: 12,344.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,314.99 : 21,139.27 = 8,943.30 : x
  2. Step 2: Convert to fraction form
    15,314.99/21,139.27 = 8,943.30/x
  3. Step 3: Cross multiply
    15,314.99x = 21,139.27 × 8,943.30
  4. Step 4: Simplify right side
    15,314.99x = 189,054,811.03
  5. Step 5: Solve for x
    x = 189,054,811.03/15,314.99
  6. Step 6: Final answer
    x = 12,344.43

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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.