Home / 12,290.15-16,959.83-6,985.23

Finding the Fourth Proportional to 12,290.15, 16,959.83 and 6,985.23

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Solution

The fourth proportional to 12,290.15, 16,959.83 and 6,985.23 is: 9,639.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,290.15 : 16,959.83 = 6,985.23 : x
  2. Step 2: Convert to fraction form
    12,290.15/16,959.83 = 6,985.23/x
  3. Step 3: Cross multiply
    12,290.15x = 16,959.83 × 6,985.23
  4. Step 4: Simplify right side
    12,290.15x = 118,468,278.38
  5. Step 5: Solve for x
    x = 118,468,278.38/12,290.15
  6. Step 6: Final answer
    x = 9,639.29

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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.