Home / 12,315.65-16,995.83-7,011.77

Finding the Fourth Proportional to 12,315.65, 16,995.83 and 7,011.77

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Solution

The fourth proportional to 12,315.65, 16,995.83 and 7,011.77 is: 9,676.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,315.65 : 16,995.83 = 7,011.77 : x
  2. Step 2: Convert to fraction form
    12,315.65/16,995.83 = 7,011.77/x
  3. Step 3: Cross multiply
    12,315.65x = 16,995.83 × 7,011.77
  4. Step 4: Simplify right side
    12,315.65x = 119,170,730.88
  5. Step 5: Solve for x
    x = 119,170,730.88/12,315.65
  6. Step 6: Final answer
    x = 9,676.37

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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.