Home / 19,858.40-27,402.54-11,900.42

Finding the Fourth Proportional to 19,858.40, 27,402.54 and 11,900.42

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Solution

The fourth proportional to 19,858.40, 27,402.54 and 11,900.42 is: 16,421.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,858.40 : 27,402.54 = 11,900.42 : x
  2. Step 2: Convert to fraction form
    19,858.40/27,402.54 = 11,900.42/x
  3. Step 3: Cross multiply
    19,858.40x = 27,402.54 × 11,900.42
  4. Step 4: Simplify right side
    19,858.40x = 326,101,598.05
  5. Step 5: Solve for x
    x = 326,101,598.05/19,858.40
  6. Step 6: Final answer
    x = 16,421.35

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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.