Home / 19,855.40-27,403.31-11,898.36

Finding the Fourth Proportional to 19,855.40, 27,403.31 and 11,898.36

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Solution

The fourth proportional to 19,855.40, 27,403.31 and 11,898.36 is: 16,421.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,855.40 : 27,403.31 = 11,898.36 : x
  2. Step 2: Convert to fraction form
    19,855.40/27,403.31 = 11,898.36/x
  3. Step 3: Cross multiply
    19,855.40x = 27,403.31 × 11,898.36
  4. Step 4: Simplify right side
    19,855.40x = 326,054,477.32
  5. Step 5: Solve for x
    x = 326,054,477.32/19,855.40
  6. Step 6: Final answer
    x = 16,421.46

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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.