Home / 10,686.60-16,030.81-2,790.16

Finding the Fourth Proportional to 10,686.60, 16,030.81 and 2,790.16

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Solution

The fourth proportional to 10,686.60, 16,030.81 and 2,790.16 is: 4,185.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,686.60 : 16,030.81 = 2,790.16 : x
  2. Step 2: Convert to fraction form
    10,686.60/16,030.81 = 2,790.16/x
  3. Step 3: Cross multiply
    10,686.60x = 16,030.81 × 2,790.16
  4. Step 4: Simplify right side
    10,686.60x = 44,728,578.41
  5. Step 5: Solve for x
    x = 44,728,578.41/10,686.60
  6. Step 6: Final answer
    x = 4,185.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.