Home / 13,752.81-20,621.43-4,390.62

Finding the Fourth Proportional to 13,752.81, 20,621.43 and 4,390.62

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Solution

The fourth proportional to 13,752.81, 20,621.43 and 4,390.62 is: 6,583.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,752.81 : 20,621.43 = 4,390.62 : x
  2. Step 2: Convert to fraction form
    13,752.81/20,621.43 = 4,390.62/x
  3. Step 3: Cross multiply
    13,752.81x = 20,621.43 × 4,390.62
  4. Step 4: Simplify right side
    13,752.81x = 90,540,862.99
  5. Step 5: Solve for x
    x = 90,540,862.99/13,752.81
  6. Step 6: Final answer
    x = 6,583.44

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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.