Home / 12,928.40-19,376.13-5,530.94

Finding the Fourth Proportional to 12,928.40, 19,376.13 and 5,530.94

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Solution

The fourth proportional to 12,928.40, 19,376.13 and 5,530.94 is: 8,289.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928.40 : 19,376.13 = 5,530.94 : x
  2. Step 2: Convert to fraction form
    12,928.40/19,376.13 = 5,530.94/x
  3. Step 3: Cross multiply
    12,928.40x = 19,376.13 × 5,530.94
  4. Step 4: Simplify right side
    12,928.40x = 107,168,212.46
  5. Step 5: Solve for x
    x = 107,168,212.46/12,928.40
  6. Step 6: Final answer
    x = 8,289.36

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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.