Home / 14,219.85-21,329.86-3,689.15

Finding the Fourth Proportional to 14,219.85, 21,329.86 and 3,689.15

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Solution

The fourth proportional to 14,219.85, 21,329.86 and 3,689.15 is: 5,533.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,219.85 : 21,329.86 = 3,689.15 : x
  2. Step 2: Convert to fraction form
    14,219.85/21,329.86 = 3,689.15/x
  3. Step 3: Cross multiply
    14,219.85x = 21,329.86 × 3,689.15
  4. Step 4: Simplify right side
    14,219.85x = 78,688,933.69
  5. Step 5: Solve for x
    x = 78,688,933.69/14,219.85
  6. Step 6: Final answer
    x = 5,533.74

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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.