Home / 14,406.39-19,880.64-8,118.77

Finding the Fourth Proportional to 14,406.39, 19,880.64 and 8,118.77

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Solution

The fourth proportional to 14,406.39, 19,880.64 and 8,118.77 is: 11,203.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,406.39 : 19,880.64 = 8,118.77 : x
  2. Step 2: Convert to fraction form
    14,406.39/19,880.64 = 8,118.77/x
  3. Step 3: Cross multiply
    14,406.39x = 19,880.64 × 8,118.77
  4. Step 4: Simplify right side
    14,406.39x = 161,406,244.21
  5. Step 5: Solve for x
    x = 161,406,244.21/14,406.39
  6. Step 6: Final answer
    x = 11,203.80

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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.