Home / 14,431.77-21,631.25-14,103.72

Finding the Fourth Proportional to 14,431.77, 21,631.25 and 14,103.72

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Solution

The fourth proportional to 14,431.77, 21,631.25 and 14,103.72 is: 21,139.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,431.77 : 21,631.25 = 14,103.72 : x
  2. Step 2: Convert to fraction form
    14,431.77/21,631.25 = 14,103.72/x
  3. Step 3: Cross multiply
    14,431.77x = 21,631.25 × 14,103.72
  4. Step 4: Simplify right side
    14,431.77x = 305,081,128.51
  5. Step 5: Solve for x
    x = 305,081,128.51/14,431.77
  6. Step 6: Final answer
    x = 21,139.55

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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.