Home / 28,213.74-38,927.16-16,878.60

Finding the Fourth Proportional to 28,213.74, 38,927.16 and 16,878.60

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Solution

The fourth proportional to 28,213.74, 38,927.16 and 16,878.60 is: 23,287.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,213.74 : 38,927.16 = 16,878.60 : x
  2. Step 2: Convert to fraction form
    28,213.74/38,927.16 = 16,878.60/x
  3. Step 3: Cross multiply
    28,213.74x = 38,927.16 × 16,878.60
  4. Step 4: Simplify right side
    28,213.74x = 657,035,962.78
  5. Step 5: Solve for x
    x = 657,035,962.78/28,213.74
  6. Step 6: Final answer
    x = 23,287.80

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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.