Home / 20,030.87-30,038.10-8,929.97

Finding the Fourth Proportional to 20,030.87, 30,038.10 and 8,929.97

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Solution

The fourth proportional to 20,030.87, 30,038.10 and 8,929.97 is: 13,391.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,030.87 : 30,038.10 = 8,929.97 : x
  2. Step 2: Convert to fraction form
    20,030.87/30,038.10 = 8,929.97/x
  3. Step 3: Cross multiply
    20,030.87x = 30,038.10 × 8,929.97
  4. Step 4: Simplify right side
    20,030.87x = 268,239,218.01
  5. Step 5: Solve for x
    x = 268,239,218.01/20,030.87
  6. Step 6: Final answer
    x = 13,391.29

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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.