Home / 12,109.65-16,711.74-6,804.36

Finding the Fourth Proportional to 12,109.65, 16,711.74 and 6,804.36

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Solution

The fourth proportional to 12,109.65, 16,711.74 and 6,804.36 is: 9,390.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,109.65 : 16,711.74 = 6,804.36 : x
  2. Step 2: Convert to fraction form
    12,109.65/16,711.74 = 6,804.36/x
  3. Step 3: Cross multiply
    12,109.65x = 16,711.74 × 6,804.36
  4. Step 4: Simplify right side
    12,109.65x = 113,712,695.19
  5. Step 5: Solve for x
    x = 113,712,695.19/12,109.65
  6. Step 6: Final answer
    x = 9,390.25

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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.