Home / 13,404.12-18,485.57-8,368.80

Finding the Fourth Proportional to 13,404.12, 18,485.57 and 8,368.80

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Solution

The fourth proportional to 13,404.12, 18,485.57 and 8,368.80 is: 11,541.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,404.12 : 18,485.57 = 8,368.80 : x
  2. Step 2: Convert to fraction form
    13,404.12/18,485.57 = 8,368.80/x
  3. Step 3: Cross multiply
    13,404.12x = 18,485.57 × 8,368.80
  4. Step 4: Simplify right side
    13,404.12x = 154,702,038.22
  5. Step 5: Solve for x
    x = 154,702,038.22/13,404.12
  6. Step 6: Final answer
    x = 11,541.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.