Home / 15,690.20-23,516.10-6,915.80

Finding the Fourth Proportional to 15,690.20, 23,516.10 and 6,915.80

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Solution

The fourth proportional to 15,690.20, 23,516.10 and 6,915.80 is: 10,365.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,690.20 : 23,516.10 = 6,915.80 : x
  2. Step 2: Convert to fraction form
    15,690.20/23,516.10 = 6,915.80/x
  3. Step 3: Cross multiply
    15,690.20x = 23,516.10 × 6,915.80
  4. Step 4: Simplify right side
    15,690.20x = 162,632,644.38
  5. Step 5: Solve for x
    x = 162,632,644.38/15,690.20
  6. Step 6: Final answer
    x = 10,365.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.