Home / 14,115.70-21,130.35-8,254.90

Finding the Fourth Proportional to 14,115.70, 21,130.35 and 8,254.90

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Solution

The fourth proportional to 14,115.70, 21,130.35 and 8,254.90 is: 12,357.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,115.70 : 21,130.35 = 8,254.90 : x
  2. Step 2: Convert to fraction form
    14,115.70/21,130.35 = 8,254.90/x
  3. Step 3: Cross multiply
    14,115.70x = 21,130.35 × 8,254.90
  4. Step 4: Simplify right side
    14,115.70x = 174,428,926.22
  5. Step 5: Solve for x
    x = 174,428,926.22/14,115.70
  6. Step 6: Final answer
    x = 12,357.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.