Home / 13,826.25-19,080.36-7,538.76

Finding the Fourth Proportional to 13,826.25, 19,080.36 and 7,538.76

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Solution

The fourth proportional to 13,826.25, 19,080.36 and 7,538.76 is: 10,403.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,826.25 : 19,080.36 = 7,538.76 : x
  2. Step 2: Convert to fraction form
    13,826.25/19,080.36 = 7,538.76/x
  3. Step 3: Cross multiply
    13,826.25x = 19,080.36 × 7,538.76
  4. Step 4: Simplify right side
    13,826.25x = 143,842,254.75
  5. Step 5: Solve for x
    x = 143,842,254.75/13,826.25
  6. Step 6: Final answer
    x = 10,403.56

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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.