Home / 13,643.24-20,466.10-4,878.20

Finding the Fourth Proportional to 13,643.24, 20,466.10 and 4,878.20

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Solution

The fourth proportional to 13,643.24, 20,466.10 and 4,878.20 is: 7,317.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,643.24 : 20,466.10 = 4,878.20 : x
  2. Step 2: Convert to fraction form
    13,643.24/20,466.10 = 4,878.20/x
  3. Step 3: Cross multiply
    13,643.24x = 20,466.10 × 4,878.20
  4. Step 4: Simplify right side
    13,643.24x = 99,837,729.02
  5. Step 5: Solve for x
    x = 99,837,729.02/13,643.24
  6. Step 6: Final answer
    x = 7,317.74

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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.