Home / 18,870.64-26,033.88-11,405.68

Finding the Fourth Proportional to 18,870.64, 26,033.88 and 11,405.68

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Solution

The fourth proportional to 18,870.64, 26,033.88 and 11,405.68 is: 15,735.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,870.64 : 26,033.88 = 11,405.68 : x
  2. Step 2: Convert to fraction form
    18,870.64/26,033.88 = 11,405.68/x
  3. Step 3: Cross multiply
    18,870.64x = 26,033.88 × 11,405.68
  4. Step 4: Simplify right side
    18,870.64x = 296,934,104.44
  5. Step 5: Solve for x
    x = 296,934,104.44/18,870.64
  6. Step 6: Final answer
    x = 15,735.24

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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.