Home / 19,860.45-29,782.86-7,207.19

Finding the Fourth Proportional to 19,860.45, 29,782.86 and 7,207.19

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Solution

The fourth proportional to 19,860.45, 29,782.86 and 7,207.19 is: 10,807.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,860.45 : 29,782.86 = 7,207.19 : x
  2. Step 2: Convert to fraction form
    19,860.45/29,782.86 = 7,207.19/x
  3. Step 3: Cross multiply
    19,860.45x = 29,782.86 × 7,207.19
  4. Step 4: Simplify right side
    19,860.45x = 214,650,730.76
  5. Step 5: Solve for x
    x = 214,650,730.76/19,860.45
  6. Step 6: Final answer
    x = 10,807.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.