Home / 15,226.96-21,013.02-8,420.97

Finding the Fourth Proportional to 15,226.96, 21,013.02 and 8,420.97

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Solution

The fourth proportional to 15,226.96, 21,013.02 and 8,420.97 is: 11,620.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,226.96 : 21,013.02 = 8,420.97 : x
  2. Step 2: Convert to fraction form
    15,226.96/21,013.02 = 8,420.97/x
  3. Step 3: Cross multiply
    15,226.96x = 21,013.02 × 8,420.97
  4. Step 4: Simplify right side
    15,226.96x = 176,950,011.03
  5. Step 5: Solve for x
    x = 176,950,011.03/15,226.96
  6. Step 6: Final answer
    x = 11,620.84

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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.