Home / 21,915.03-32,876.87-7,122.99

Finding the Fourth Proportional to 21,915.03, 32,876.87 and 7,122.99

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Solution

The fourth proportional to 21,915.03, 32,876.87 and 7,122.99 is: 10,685.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,915.03 : 32,876.87 = 7,122.99 : x
  2. Step 2: Convert to fraction form
    21,915.03/32,876.87 = 7,122.99/x
  3. Step 3: Cross multiply
    21,915.03x = 32,876.87 × 7,122.99
  4. Step 4: Simplify right side
    21,915.03x = 234,181,580.63
  5. Step 5: Solve for x
    x = 234,181,580.63/21,915.03
  6. Step 6: Final answer
    x = 10,685.89

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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.