Home / 13,080.84-18,051.35-7,112.45

Finding the Fourth Proportional to 13,080.84, 18,051.35 and 7,112.45

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Solution

The fourth proportional to 13,080.84, 18,051.35 and 7,112.45 is: 9,815.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,080.84 : 18,051.35 = 7,112.45 : x
  2. Step 2: Convert to fraction form
    13,080.84/18,051.35 = 7,112.45/x
  3. Step 3: Cross multiply
    13,080.84x = 18,051.35 × 7,112.45
  4. Step 4: Simplify right side
    13,080.84x = 128,389,324.31
  5. Step 5: Solve for x
    x = 128,389,324.31/13,080.84
  6. Step 6: Final answer
    x = 9,815.07

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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.