Home / 12,315.80-16,961.28-11,525.24

Finding the Fourth Proportional to 12,315.80, 16,961.28 and 11,525.24

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Solution

The fourth proportional to 12,315.80, 16,961.28 and 11,525.24 is: 15,872.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,315.80 : 16,961.28 = 11,525.24 : x
  2. Step 2: Convert to fraction form
    12,315.80/16,961.28 = 11,525.24/x
  3. Step 3: Cross multiply
    12,315.80x = 16,961.28 × 11,525.24
  4. Step 4: Simplify right side
    12,315.80x = 195,482,822.71
  5. Step 5: Solve for x
    x = 195,482,822.71/12,315.80
  6. Step 6: Final answer
    x = 15,872.52

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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.