Home / 15,492.72-21,382.80-9,205.56

Finding the Fourth Proportional to 15,492.72, 21,382.80 and 9,205.56

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Solution

The fourth proportional to 15,492.72, 21,382.80 and 9,205.56 is: 12,705.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,492.72 : 21,382.80 = 9,205.56 : x
  2. Step 2: Convert to fraction form
    15,492.72/21,382.80 = 9,205.56/x
  3. Step 3: Cross multiply
    15,492.72x = 21,382.80 × 9,205.56
  4. Step 4: Simplify right side
    15,492.72x = 196,840,648.37
  5. Step 5: Solve for x
    x = 196,840,648.37/15,492.72
  6. Step 6: Final answer
    x = 12,705.36

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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.