Home / 20,334.10-30,501.15-12,558.10

Finding the Fourth Proportional to 20,334.10, 30,501.15 and 12,558.10

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Solution

The fourth proportional to 20,334.10, 30,501.15 and 12,558.10 is: 18,837.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,334.10 : 30,501.15 = 12,558.10 : x
  2. Step 2: Convert to fraction form
    20,334.10/30,501.15 = 12,558.10/x
  3. Step 3: Cross multiply
    20,334.10x = 30,501.15 × 12,558.10
  4. Step 4: Simplify right side
    20,334.10x = 383,036,491.82
  5. Step 5: Solve for x
    x = 383,036,491.82/20,334.10
  6. Step 6: Final answer
    x = 18,837.15

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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.