Home / 19,860.67-27,399.90-11,903.68

Finding the Fourth Proportional to 19,860.67, 27,399.90 and 11,903.68

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Solution

The fourth proportional to 19,860.67, 27,399.90 and 11,903.68 is: 16,422.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,860.67 : 27,399.90 = 11,903.68 : x
  2. Step 2: Convert to fraction form
    19,860.67/27,399.90 = 11,903.68/x
  3. Step 3: Cross multiply
    19,860.67x = 27,399.90 × 11,903.68
  4. Step 4: Simplify right side
    19,860.67x = 326,159,641.63
  5. Step 5: Solve for x
    x = 326,159,641.63/19,860.67
  6. Step 6: Final answer
    x = 16,422.39

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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.