Home / 14,289.11-19,718.36-7,915.97

Finding the Fourth Proportional to 14,289.11, 19,718.36 and 7,915.97

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Solution

The fourth proportional to 14,289.11, 19,718.36 and 7,915.97 is: 10,923.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,289.11 : 19,718.36 = 7,915.97 : x
  2. Step 2: Convert to fraction form
    14,289.11/19,718.36 = 7,915.97/x
  3. Step 3: Cross multiply
    14,289.11x = 19,718.36 × 7,915.97
  4. Step 4: Simplify right side
    14,289.11x = 156,089,946.21
  5. Step 5: Solve for x
    x = 156,089,946.21/14,289.11
  6. Step 6: Final answer
    x = 10,923.70

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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.