Home / 13,826.70-19,080.86-7,539.07

Finding the Fourth Proportional to 13,826.70, 19,080.86 and 7,539.07

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Solution

The fourth proportional to 13,826.70, 19,080.86 and 7,539.07 is: 10,403.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,826.70 : 19,080.86 = 7,539.07 : x
  2. Step 2: Convert to fraction form
    13,826.70/19,080.86 = 7,539.07/x
  3. Step 3: Cross multiply
    13,826.70x = 19,080.86 × 7,539.07
  4. Step 4: Simplify right side
    13,826.70x = 143,852,050.95
  5. Step 5: Solve for x
    x = 143,852,050.95/13,826.70
  6. Step 6: Final answer
    x = 10,403.93

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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.