Home / 28,220.84-38,942.66-15,471.98

Finding the Fourth Proportional to 28,220.84, 38,942.66 and 15,471.98

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Solution

The fourth proportional to 28,220.84, 38,942.66 and 15,471.98 is: 21,350.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,220.84 : 38,942.66 = 15,471.98 : x
  2. Step 2: Convert to fraction form
    28,220.84/38,942.66 = 15,471.98/x
  3. Step 3: Cross multiply
    28,220.84x = 38,942.66 × 15,471.98
  4. Step 4: Simplify right side
    28,220.84x = 602,520,056.67
  5. Step 5: Solve for x
    x = 602,520,056.67/28,220.84
  6. Step 6: Final answer
    x = 21,350.18

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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.