Home / 21,950.18-30,291.01-11,878.40

Finding the Fourth Proportional to 21,950.18, 30,291.01 and 11,878.40

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Solution

The fourth proportional to 21,950.18, 30,291.01 and 11,878.40 is: 16,392.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,950.18 : 30,291.01 = 11,878.40 : x
  2. Step 2: Convert to fraction form
    21,950.18/30,291.01 = 11,878.40/x
  3. Step 3: Cross multiply
    21,950.18x = 30,291.01 × 11,878.40
  4. Step 4: Simplify right side
    21,950.18x = 359,808,611.42
  5. Step 5: Solve for x
    x = 359,808,611.42/21,950.18
  6. Step 6: Final answer
    x = 16,392.06

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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.