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Finding the Fourth Proportional to 26,653.32, 39,973 and 7,928.32

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Solution

The fourth proportional to 26,653.32, 39,973 and 7,928.32 is: 11,890.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,653.32 : 39,973 = 7,928.32 : x
  2. Step 2: Convert to fraction form
    26,653.32/39,973 = 7,928.32/x
  3. Step 3: Cross multiply
    26,653.32x = 39,973 × 7,928.32
  4. Step 4: Simplify right side
    26,653.32x = 316,918,735.36
  5. Step 5: Solve for x
    x = 316,918,735.36/26,653.32
  6. Step 6: Final answer
    x = 11,890.40

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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.