Home / 13,809.18-19,056.69-7,521.58

Finding the Fourth Proportional to 13,809.18, 19,056.69 and 7,521.58

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Solution

The fourth proportional to 13,809.18, 19,056.69 and 7,521.58 is: 10,379.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,809.18 : 19,056.69 = 7,521.58 : x
  2. Step 2: Convert to fraction form
    13,809.18/19,056.69 = 7,521.58/x
  3. Step 3: Cross multiply
    13,809.18x = 19,056.69 × 7,521.58
  4. Step 4: Simplify right side
    13,809.18x = 143,336,418.37
  5. Step 5: Solve for x
    x = 143,336,418.37/13,809.18
  6. Step 6: Final answer
    x = 10,379.79

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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.