Home / 15,903.15-21,910.25-12,305.74

Finding the Fourth Proportional to 15,903.15, 21,910.25 and 12,305.74

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Solution

The fourth proportional to 15,903.15, 21,910.25 and 12,305.74 is: 16,953.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,903.15 : 21,910.25 = 12,305.74 : x
  2. Step 2: Convert to fraction form
    15,903.15/21,910.25 = 12,305.74/x
  3. Step 3: Cross multiply
    15,903.15x = 21,910.25 × 12,305.74
  4. Step 4: Simplify right side
    15,903.15x = 269,621,809.07
  5. Step 5: Solve for x
    x = 269,621,809.07/15,903.15
  6. Step 6: Final answer
    x = 16,953.99

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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.