Home / 13,749.18-20,627.86-4,389.80

Finding the Fourth Proportional to 13,749.18, 20,627.86 and 4,389.80

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Solution

The fourth proportional to 13,749.18, 20,627.86 and 4,389.80 is: 6,586.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,749.18 : 20,627.86 = 4,389.80 : x
  2. Step 2: Convert to fraction form
    13,749.18/20,627.86 = 4,389.80/x
  3. Step 3: Cross multiply
    13,749.18x = 20,627.86 × 4,389.80
  4. Step 4: Simplify right side
    13,749.18x = 90,552,179.83
  5. Step 5: Solve for x
    x = 90,552,179.83/13,749.18
  6. Step 6: Final answer
    x = 6,586.01

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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.