Home / 13,687.02-18,886.94-8,021.02

Finding the Fourth Proportional to 13,687.02, 18,886.94 and 8,021.02

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Solution

The fourth proportional to 13,687.02, 18,886.94 and 8,021.02 is: 11,068.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,687.02 : 18,886.94 = 8,021.02 : x
  2. Step 2: Convert to fraction form
    13,687.02/18,886.94 = 8,021.02/x
  3. Step 3: Cross multiply
    13,687.02x = 18,886.94 × 8,021.02
  4. Step 4: Simplify right side
    13,687.02x = 151,492,523.48
  5. Step 5: Solve for x
    x = 151,492,523.48/13,687.02
  6. Step 6: Final answer
    x = 11,068.34

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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.