Home / 12,928.71-19,376.85-7,005.59

Finding the Fourth Proportional to 12,928.71, 19,376.85 and 7,005.59

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Solution

The fourth proportional to 12,928.71, 19,376.85 and 7,005.59 is: 10,499.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928.71 : 19,376.85 = 7,005.59 : x
  2. Step 2: Convert to fraction form
    12,928.71/19,376.85 = 7,005.59/x
  3. Step 3: Cross multiply
    12,928.71x = 19,376.85 × 7,005.59
  4. Step 4: Simplify right side
    12,928.71x = 135,746,268.64
  5. Step 5: Solve for x
    x = 135,746,268.64/12,928.71
  6. Step 6: Final answer
    x = 10,499.60

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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.