Home / 14,290.09-19,718.54-7,915.79

Finding the Fourth Proportional to 14,290.09, 19,718.54 and 7,915.79

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Solution

The fourth proportional to 14,290.09, 19,718.54 and 7,915.79 is: 10,922.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,290.09 : 19,718.54 = 7,915.79 : x
  2. Step 2: Convert to fraction form
    14,290.09/19,718.54 = 7,915.79/x
  3. Step 3: Cross multiply
    14,290.09x = 19,718.54 × 7,915.79
  4. Step 4: Simplify right side
    14,290.09x = 156,087,861.15
  5. Step 5: Solve for x
    x = 156,087,861.15/14,290.09
  6. Step 6: Final answer
    x = 10,922.81

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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.