Home / 13,080.79-18,051.51-7,112.53

Finding the Fourth Proportional to 13,080.79, 18,051.51 and 7,112.53

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Solution

The fourth proportional to 13,080.79, 18,051.51 and 7,112.53 is: 9,815.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,080.79 : 18,051.51 = 7,112.53 : x
  2. Step 2: Convert to fraction form
    13,080.79/18,051.51 = 7,112.53/x
  3. Step 3: Cross multiply
    13,080.79x = 18,051.51 × 7,112.53
  4. Step 4: Simplify right side
    13,080.79x = 128,391,906.42
  5. Step 5: Solve for x
    x = 128,391,906.42/13,080.79
  6. Step 6: Final answer
    x = 9,815.30

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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.