Home / 13,763.78-20,643.90-4,404.77

Finding the Fourth Proportional to 13,763.78, 20,643.90 and 4,404.77

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Solution

The fourth proportional to 13,763.78, 20,643.90 and 4,404.77 is: 6,606.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,763.78 : 20,643.90 = 4,404.77 : x
  2. Step 2: Convert to fraction form
    13,763.78/20,643.90 = 4,404.77/x
  3. Step 3: Cross multiply
    13,763.78x = 20,643.90 × 4,404.77
  4. Step 4: Simplify right side
    13,763.78x = 90,931,631.40
  5. Step 5: Solve for x
    x = 90,931,631.40/13,763.78
  6. Step 6: Final answer
    x = 6,606.59

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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.