Home / 15,895.53-21,939.86-10,861.79

Finding the Fourth Proportional to 15,895.53, 21,939.86 and 10,861.79

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Solution

The fourth proportional to 15,895.53, 21,939.86 and 10,861.79 is: 14,992.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,895.53 : 21,939.86 = 10,861.79 : x
  2. Step 2: Convert to fraction form
    15,895.53/21,939.86 = 10,861.79/x
  3. Step 3: Cross multiply
    15,895.53x = 21,939.86 × 10,861.79
  4. Step 4: Simplify right side
    15,895.53x = 238,306,069.40
  5. Step 5: Solve for x
    x = 238,306,069.40/15,895.53
  6. Step 6: Final answer
    x = 14,992.02

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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.