Home / 19,858.23-27,389.18-13,489.73

Finding the Fourth Proportional to 19,858.23, 27,389.18 and 13,489.73

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Solution

The fourth proportional to 19,858.23, 27,389.18 and 13,489.73 is: 18,605.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,858.23 : 27,389.18 = 13,489.73 : x
  2. Step 2: Convert to fraction form
    19,858.23/27,389.18 = 13,489.73/x
  3. Step 3: Cross multiply
    19,858.23x = 27,389.18 × 13,489.73
  4. Step 4: Simplify right side
    19,858.23x = 369,472,643.12
  5. Step 5: Solve for x
    x = 369,472,643.12/19,858.23
  6. Step 6: Final answer
    x = 18,605.52

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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.