Home / 20,915.01-31,368.87-6,123.60

Finding the Fourth Proportional to 20,915.01, 31,368.87 and 6,123.60

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Solution

The fourth proportional to 20,915.01, 31,368.87 and 6,123.60 is: 9,184.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,915.01 : 31,368.87 = 6,123.60 : x
  2. Step 2: Convert to fraction form
    20,915.01/31,368.87 = 6,123.60/x
  3. Step 3: Cross multiply
    20,915.01x = 31,368.87 × 6,123.60
  4. Step 4: Simplify right side
    20,915.01x = 192,090,412.33
  5. Step 5: Solve for x
    x = 192,090,412.33/20,915.01
  6. Step 6: Final answer
    x = 9,184.33

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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.