Home / 21,056.76-29,059.56-12,106.80

Finding the Fourth Proportional to 21,056.76, 29,059.56 and 12,106.80

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Solution

The fourth proportional to 21,056.76, 29,059.56 and 12,106.80 is: 16,708.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,056.76 : 29,059.56 = 12,106.80 : x
  2. Step 2: Convert to fraction form
    21,056.76/29,059.56 = 12,106.80/x
  3. Step 3: Cross multiply
    21,056.76x = 29,059.56 × 12,106.80
  4. Step 4: Simplify right side
    21,056.76x = 351,818,281.01
  5. Step 5: Solve for x
    x = 351,818,281.01/21,056.76
  6. Step 6: Final answer
    x = 16,708.09

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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.