Home / 15,369.96-21,211.55-11,586.45

Finding the Fourth Proportional to 15,369.96, 21,211.55 and 11,586.45

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Solution

The fourth proportional to 15,369.96, 21,211.55 and 11,586.45 is: 15,990.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,369.96 : 21,211.55 = 11,586.45 : x
  2. Step 2: Convert to fraction form
    15,369.96/21,211.55 = 11,586.45/x
  3. Step 3: Cross multiply
    15,369.96x = 21,211.55 × 11,586.45
  4. Step 4: Simplify right side
    15,369.96x = 245,766,563.50
  5. Step 5: Solve for x
    x = 245,766,563.50/15,369.96
  6. Step 6: Final answer
    x = 15,990.06

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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.