Home / 14,289.62-19,718.64-7,915.59

Finding the Fourth Proportional to 14,289.62, 19,718.64 and 7,915.59

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Solution

The fourth proportional to 14,289.62, 19,718.64 and 7,915.59 is: 10,922.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,289.62 : 19,718.64 = 7,915.59 : x
  2. Step 2: Convert to fraction form
    14,289.62/19,718.64 = 7,915.59/x
  3. Step 3: Cross multiply
    14,289.62x = 19,718.64 × 7,915.59
  4. Step 4: Simplify right side
    14,289.62x = 156,084,669.60
  5. Step 5: Solve for x
    x = 156,084,669.60/14,289.62
  6. Step 6: Final answer
    x = 10,922.94

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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.