Home / 20,409.23-30,599.94-10,389.36

Finding the Fourth Proportional to 20,409.23, 30,599.94 and 10,389.36

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Solution

The fourth proportional to 20,409.23, 30,599.94 and 10,389.36 is: 15,576.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,409.23 : 30,599.94 = 10,389.36 : x
  2. Step 2: Convert to fraction form
    20,409.23/30,599.94 = 10,389.36/x
  3. Step 3: Cross multiply
    20,409.23x = 30,599.94 × 10,389.36
  4. Step 4: Simplify right side
    20,409.23x = 317,913,946.35
  5. Step 5: Solve for x
    x = 317,913,946.35/20,409.23
  6. Step 6: Final answer
    x = 15,576.97

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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.