Home / 15,903.53-21,910.77-12,306.12

Finding the Fourth Proportional to 15,903.53, 21,910.77 and 12,306.12

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Solution

The fourth proportional to 15,903.53, 21,910.77 and 12,306.12 is: 16,954.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,903.53 : 21,910.77 = 12,306.12 : x
  2. Step 2: Convert to fraction form
    15,903.53/21,910.77 = 12,306.12/x
  3. Step 3: Cross multiply
    15,903.53x = 21,910.77 × 12,306.12
  4. Step 4: Simplify right side
    15,903.53x = 269,636,393.83
  5. Step 5: Solve for x
    x = 269,636,393.83/15,903.53
  6. Step 6: Final answer
    x = 16,954.50

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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.