Home / 21,852.84-30,152.40-12,776.45

Finding the Fourth Proportional to 21,852.84, 30,152.40 and 12,776.45

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Solution

The fourth proportional to 21,852.84, 30,152.40 and 12,776.45 is: 17,628.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,852.84 : 30,152.40 = 12,776.45 : x
  2. Step 2: Convert to fraction form
    21,852.84/30,152.40 = 12,776.45/x
  3. Step 3: Cross multiply
    21,852.84x = 30,152.40 × 12,776.45
  4. Step 4: Simplify right side
    21,852.84x = 385,240,706.36
  5. Step 5: Solve for x
    x = 385,240,706.36/21,852.84
  6. Step 6: Final answer
    x = 17,628.86

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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.