Home / 21,750.32-30,017.55-12,191.84

Finding the Fourth Proportional to 21,750.32, 30,017.55 and 12,191.84

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Solution

The fourth proportional to 21,750.32, 30,017.55 and 12,191.84 is: 16,825.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,750.32 : 30,017.55 = 12,191.84 : x
  2. Step 2: Convert to fraction form
    21,750.32/30,017.55 = 12,191.84/x
  3. Step 3: Cross multiply
    21,750.32x = 30,017.55 × 12,191.84
  4. Step 4: Simplify right side
    21,750.32x = 365,969,166.79
  5. Step 5: Solve for x
    x = 365,969,166.79/21,750.32
  6. Step 6: Final answer
    x = 16,825.92

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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.