Home / 19,389.40-29,069.70-7,696.60

Finding the Fourth Proportional to 19,389.40, 29,069.70 and 7,696.60

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Solution

The fourth proportional to 19,389.40, 29,069.70 and 7,696.60 is: 11,539.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,389.40 : 29,069.70 = 7,696.60 : x
  2. Step 2: Convert to fraction form
    19,389.40/29,069.70 = 7,696.60/x
  3. Step 3: Cross multiply
    19,389.40x = 29,069.70 × 7,696.60
  4. Step 4: Simplify right side
    19,389.40x = 223,737,853.02
  5. Step 5: Solve for x
    x = 223,737,853.02/19,389.40
  6. Step 6: Final answer
    x = 11,539.18

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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.