Home / 12,780.95-19,173.23-3,421.26

Finding the Fourth Proportional to 12,780.95, 19,173.23 and 3,421.26

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Solution

The fourth proportional to 12,780.95, 19,173.23 and 3,421.26 is: 5,132.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780.95 : 19,173.23 = 3,421.26 : x
  2. Step 2: Convert to fraction form
    12,780.95/19,173.23 = 3,421.26/x
  3. Step 3: Cross multiply
    12,780.95x = 19,173.23 × 3,421.26
  4. Step 4: Simplify right side
    12,780.95x = 65,596,587.76
  5. Step 5: Solve for x
    x = 65,596,587.76/12,780.95
  6. Step 6: Final answer
    x = 5,132.37

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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.