Home / 15,319.55-21,137.69-8,943.24

Finding the Fourth Proportional to 15,319.55, 21,137.69 and 8,943.24

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Solution

The fourth proportional to 15,319.55, 21,137.69 and 8,943.24 is: 12,339.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,319.55 : 21,137.69 = 8,943.24 : x
  2. Step 2: Convert to fraction form
    15,319.55/21,137.69 = 8,943.24/x
  3. Step 3: Cross multiply
    15,319.55x = 21,137.69 × 8,943.24
  4. Step 4: Simplify right side
    15,319.55x = 189,039,509.92
  5. Step 5: Solve for x
    x = 189,039,509.92/15,319.55
  6. Step 6: Final answer
    x = 12,339.76

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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.