Home / 19,111.60-28,667.40-13,206.70

Finding the Fourth Proportional to 19,111.60, 28,667.40 and 13,206.70

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Solution

The fourth proportional to 19,111.60, 28,667.40 and 13,206.70 is: 19,810.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,111.60 : 28,667.40 = 13,206.70 : x
  2. Step 2: Convert to fraction form
    19,111.60/28,667.40 = 13,206.70/x
  3. Step 3: Cross multiply
    19,111.60x = 28,667.40 × 13,206.70
  4. Step 4: Simplify right side
    19,111.60x = 378,601,751.58
  5. Step 5: Solve for x
    x = 378,601,751.58/19,111.60
  6. Step 6: Final answer
    x = 19,810.05

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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.