Home / 18,928.16-26,120.88-10,971.92

Finding the Fourth Proportional to 18,928.16, 26,120.88 and 10,971.92

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Solution

The fourth proportional to 18,928.16, 26,120.88 and 10,971.92 is: 15,141.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,928.16 : 26,120.88 = 10,971.92 : x
  2. Step 2: Convert to fraction form
    18,928.16/26,120.88 = 10,971.92/x
  3. Step 3: Cross multiply
    18,928.16x = 26,120.88 × 10,971.92
  4. Step 4: Simplify right side
    18,928.16x = 286,596,205.69
  5. Step 5: Solve for x
    x = 286,596,205.69/18,928.16
  6. Step 6: Final answer
    x = 15,141.26

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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.