Home / 15,903.77-21,967.86-12,103.85

Finding the Fourth Proportional to 15,903.77, 21,967.86 and 12,103.85

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Solution

The fourth proportional to 15,903.77, 21,967.86 and 12,103.85 is: 16,719.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,903.77 : 21,967.86 = 12,103.85 : x
  2. Step 2: Convert to fraction form
    15,903.77/21,967.86 = 12,103.85/x
  3. Step 3: Cross multiply
    15,903.77x = 21,967.86 × 12,103.85
  4. Step 4: Simplify right side
    15,903.77x = 265,895,572.42
  5. Step 5: Solve for x
    x = 265,895,572.42/15,903.77
  6. Step 6: Final answer
    x = 16,719.03

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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.