Home / 13,819.68-19,071.36-7,851.51

Finding the Fourth Proportional to 13,819.68, 19,071.36 and 7,851.51

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Solution

The fourth proportional to 13,819.68, 19,071.36 and 7,851.51 is: 10,835.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,819.68 : 19,071.36 = 7,851.51 : x
  2. Step 2: Convert to fraction form
    13,819.68/19,071.36 = 7,851.51/x
  3. Step 3: Cross multiply
    13,819.68x = 19,071.36 × 7,851.51
  4. Step 4: Simplify right side
    13,819.68x = 149,738,973.75
  5. Step 5: Solve for x
    x = 149,738,973.75/13,819.68
  6. Step 6: Final answer
    x = 10,835.20

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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.