Home / 21,521.46-29,701.40-12,571.84

Finding the Fourth Proportional to 21,521.46, 29,701.40 and 12,571.84

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Solution

The fourth proportional to 21,521.46, 29,701.40 and 12,571.84 is: 17,350.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,521.46 : 29,701.40 = 12,571.84 : x
  2. Step 2: Convert to fraction form
    21,521.46/29,701.40 = 12,571.84/x
  3. Step 3: Cross multiply
    21,521.46x = 29,701.40 × 12,571.84
  4. Step 4: Simplify right side
    21,521.46x = 373,401,100.07
  5. Step 5: Solve for x
    x = 373,401,100.07/21,521.46
  6. Step 6: Final answer
    x = 17,350.18

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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.