Home / 16,681.20-23,029.68-12,455.52

Finding the Fourth Proportional to 16,681.20, 23,029.68 and 12,455.52

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Solution

The fourth proportional to 16,681.20, 23,029.68 and 12,455.52 is: 17,195.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,681.20 : 23,029.68 = 12,455.52 : x
  2. Step 2: Convert to fraction form
    16,681.20/23,029.68 = 12,455.52/x
  3. Step 3: Cross multiply
    16,681.20x = 23,029.68 × 12,455.52
  4. Step 4: Simplify right side
    16,681.20x = 286,846,639.83
  5. Step 5: Solve for x
    x = 286,846,639.83/16,681.20
  6. Step 6: Final answer
    x = 17,195.80

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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.