Home / 14,289.10-19,718.50-7,915.43

Finding the Fourth Proportional to 14,289.10, 19,718.50 and 7,915.43

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Solution

The fourth proportional to 14,289.10, 19,718.50 and 7,915.43 is: 10,923.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,289.10 : 19,718.50 = 7,915.43 : x
  2. Step 2: Convert to fraction form
    14,289.10/19,718.50 = 7,915.43/x
  3. Step 3: Cross multiply
    14,289.10x = 19,718.50 × 7,915.43
  4. Step 4: Simplify right side
    14,289.10x = 156,080,406.46
  5. Step 5: Solve for x
    x = 156,080,406.46/14,289.10
  6. Step 6: Final answer
    x = 10,923.04

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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.