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Finding the Fourth Proportional to 15,339.84, 22,980.43 and 12,856.92

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Solution

The fourth proportional to 15,339.84, 22,980.43 and 12,856.92 is: 19,260.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,339.84 : 22,980.43 = 12,856.92 : x
  2. Step 2: Convert to fraction form
    15,339.84/22,980.43 = 12,856.92/x
  3. Step 3: Cross multiply
    15,339.84x = 22,980.43 × 12,856.92
  4. Step 4: Simplify right side
    15,339.84x = 295,457,550.08
  5. Step 5: Solve for x
    x = 295,457,550.08/15,339.84
  6. Step 6: Final answer
    x = 19,260.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.