Home / 20,903.50-31,355.70-9,804.07

Finding the Fourth Proportional to 20,903.50, 31,355.70 and 9,804.07

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Solution

The fourth proportional to 20,903.50, 31,355.70 and 9,804.07 is: 14,706.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,903.50 : 31,355.70 = 9,804.07 : x
  2. Step 2: Convert to fraction form
    20,903.50/31,355.70 = 9,804.07/x
  3. Step 3: Cross multiply
    20,903.50x = 31,355.70 × 9,804.07
  4. Step 4: Simplify right side
    20,903.50x = 307,413,477.70
  5. Step 5: Solve for x
    x = 307,413,477.70/20,903.50
  6. Step 6: Final answer
    x = 14,706.32

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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.