Home / 13,289.87-19,929.85-4,403.57

Finding the Fourth Proportional to 13,289.87, 19,929.85 and 4,403.57

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Solution

The fourth proportional to 13,289.87, 19,929.85 and 4,403.57 is: 6,603.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.87 : 19,929.85 = 4,403.57 : x
  2. Step 2: Convert to fraction form
    13,289.87/19,929.85 = 4,403.57/x
  3. Step 3: Cross multiply
    13,289.87x = 19,929.85 × 4,403.57
  4. Step 4: Simplify right side
    13,289.87x = 87,762,378.91
  5. Step 5: Solve for x
    x = 87,762,378.91/13,289.87
  6. Step 6: Final answer
    x = 6,603.70

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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.