Home / 13,506.60-18,647.80-8,477.72

Finding the Fourth Proportional to 13,506.60, 18,647.80 and 8,477.72

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Solution

The fourth proportional to 13,506.60, 18,647.80 and 8,477.72 is: 11,704.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,506.60 : 18,647.80 = 8,477.72 : x
  2. Step 2: Convert to fraction form
    13,506.60/18,647.80 = 8,477.72/x
  3. Step 3: Cross multiply
    13,506.60x = 18,647.80 × 8,477.72
  4. Step 4: Simplify right side
    13,506.60x = 158,090,827.02
  5. Step 5: Solve for x
    x = 158,090,827.02/13,506.60
  6. Step 6: Final answer
    x = 11,704.71

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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.