Home / 12,289.13-16,959.75-6,984.98

Finding the Fourth Proportional to 12,289.13, 16,959.75 and 6,984.98

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Solution

The fourth proportional to 12,289.13, 16,959.75 and 6,984.98 is: 9,639.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289.13 : 16,959.75 = 6,984.98 : x
  2. Step 2: Convert to fraction form
    12,289.13/16,959.75 = 6,984.98/x
  3. Step 3: Cross multiply
    12,289.13x = 16,959.75 × 6,984.98
  4. Step 4: Simplify right side
    12,289.13x = 118,463,514.56
  5. Step 5: Solve for x
    x = 118,463,514.56/12,289.13
  6. Step 6: Final answer
    x = 9,639.70

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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.