Home / 21,852.63-30,156.84-12,421.26

Finding the Fourth Proportional to 21,852.63, 30,156.84 and 12,421.26

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Solution

The fourth proportional to 21,852.63, 30,156.84 and 12,421.26 is: 17,141.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,852.63 : 30,156.84 = 12,421.26 : x
  2. Step 2: Convert to fraction form
    21,852.63/30,156.84 = 12,421.26/x
  3. Step 3: Cross multiply
    21,852.63x = 30,156.84 × 12,421.26
  4. Step 4: Simplify right side
    21,852.63x = 374,585,950.42
  5. Step 5: Solve for x
    x = 374,585,950.42/21,852.63
  6. Step 6: Final answer
    x = 17,141.46

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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.