Home / 22,307.45-30,779.43-12,870.54

Finding the Fourth Proportional to 22,307.45, 30,779.43 and 12,870.54

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Solution

The fourth proportional to 22,307.45, 30,779.43 and 12,870.54 is: 17,758.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,307.45 : 30,779.43 = 12,870.54 : x
  2. Step 2: Convert to fraction form
    22,307.45/30,779.43 = 12,870.54/x
  3. Step 3: Cross multiply
    22,307.45x = 30,779.43 × 12,870.54
  4. Step 4: Simplify right side
    22,307.45x = 396,147,884.99
  5. Step 5: Solve for x
    x = 396,147,884.99/22,307.45
  6. Step 6: Final answer
    x = 17,758.55

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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.