Home / 23,129.91-31,919.50-12,519.77

Finding the Fourth Proportional to 23,129.91, 31,919.50 and 12,519.77

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Solution

The fourth proportional to 23,129.91, 31,919.50 and 12,519.77 is: 17,277.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,129.91 : 31,919.50 = 12,519.77 : x
  2. Step 2: Convert to fraction form
    23,129.91/31,919.50 = 12,519.77/x
  3. Step 3: Cross multiply
    23,129.91x = 31,919.50 × 12,519.77
  4. Step 4: Simplify right side
    23,129.91x = 399,624,798.52
  5. Step 5: Solve for x
    x = 399,624,798.52/23,129.91
  6. Step 6: Final answer
    x = 17,277.40

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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.