Home / 13,081.50-18,051.93-7,112.97

Finding the Fourth Proportional to 13,081.50, 18,051.93 and 7,112.97

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Solution

The fourth proportional to 13,081.50, 18,051.93 and 7,112.97 is: 9,815.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,081.50 : 18,051.93 = 7,112.97 : x
  2. Step 2: Convert to fraction form
    13,081.50/18,051.93 = 7,112.97/x
  3. Step 3: Cross multiply
    13,081.50x = 18,051.93 × 7,112.97
  4. Step 4: Simplify right side
    13,081.50x = 128,402,836.53
  5. Step 5: Solve for x
    x = 128,402,836.53/13,081.50
  6. Step 6: Final answer
    x = 9,815.60

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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.