Home / 28,215.90-38,927.63-16,885.72

Finding the Fourth Proportional to 28,215.90, 38,927.63 and 16,885.72

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Solution

The fourth proportional to 28,215.90, 38,927.63 and 16,885.72 is: 23,296.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,215.90 : 38,927.63 = 16,885.72 : x
  2. Step 2: Convert to fraction form
    28,215.90/38,927.63 = 16,885.72/x
  3. Step 3: Cross multiply
    28,215.90x = 38,927.63 × 16,885.72
  4. Step 4: Simplify right side
    28,215.90x = 657,321,060.44
  5. Step 5: Solve for x
    x = 657,321,060.44/28,215.90
  6. Step 6: Final answer
    x = 23,296.12

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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.