Home / 13,880.16-20,821.35-4,520.00

Finding the Fourth Proportional to 13,880.16, 20,821.35 and 4,520.00

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Solution

The fourth proportional to 13,880.16, 20,821.35 and 4,520.00 is: 6,780.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,880.16 : 20,821.35 = 4,520.00 : x
  2. Step 2: Convert to fraction form
    13,880.16/20,821.35 = 4,520.00/x
  3. Step 3: Cross multiply
    13,880.16x = 20,821.35 × 4,520.00
  4. Step 4: Simplify right side
    13,880.16x = 94,112,571.00
  5. Step 5: Solve for x
    x = 94,112,571.00/13,880.16
  6. Step 6: Final answer
    x = 6,780.37

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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.