Home / 15,653.87-21,604.55-9,687.46

Finding the Fourth Proportional to 15,653.87, 21,604.55 and 9,687.46

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Solution

The fourth proportional to 15,653.87, 21,604.55 and 9,687.46 is: 13,370.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,653.87 : 21,604.55 = 9,687.46 : x
  2. Step 2: Convert to fraction form
    15,653.87/21,604.55 = 9,687.46/x
  3. Step 3: Cross multiply
    15,653.87x = 21,604.55 × 9,687.46
  4. Step 4: Simplify right side
    15,653.87x = 209,293,213.94
  5. Step 5: Solve for x
    x = 209,293,213.94/15,653.87
  6. Step 6: Final answer
    x = 13,370.06

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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.