Home / 13,928.51-19,222.36-7,960.05

Finding the Fourth Proportional to 13,928.51, 19,222.36 and 7,960.05

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Solution

The fourth proportional to 13,928.51, 19,222.36 and 7,960.05 is: 10,985.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.51 : 19,222.36 = 7,960.05 : x
  2. Step 2: Convert to fraction form
    13,928.51/19,222.36 = 7,960.05/x
  3. Step 3: Cross multiply
    13,928.51x = 19,222.36 × 7,960.05
  4. Step 4: Simplify right side
    13,928.51x = 153,010,946.72
  5. Step 5: Solve for x
    x = 153,010,946.72/13,928.51
  6. Step 6: Final answer
    x = 10,985.45

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Double scale
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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.