Home / 12,699.31-19,050.22-4,378.23

Finding the Fourth Proportional to 12,699.31, 19,050.22 and 4,378.23

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Solution

The fourth proportional to 12,699.31, 19,050.22 and 4,378.23 is: 6,567.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,699.31 : 19,050.22 = 4,378.23 : x
  2. Step 2: Convert to fraction form
    12,699.31/19,050.22 = 4,378.23/x
  3. Step 3: Cross multiply
    12,699.31x = 19,050.22 × 4,378.23
  4. Step 4: Simplify right side
    12,699.31x = 83,406,244.71
  5. Step 5: Solve for x
    x = 83,406,244.71/12,699.31
  6. Step 6: Final answer
    x = 6,567.78

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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.