Home / 15,486.31-21,379.97-10,196.50

Finding the Fourth Proportional to 15,486.31, 21,379.97 and 10,196.50

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Solution

The fourth proportional to 15,486.31, 21,379.97 and 10,196.50 is: 14,077.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,486.31 : 21,379.97 = 10,196.50 : x
  2. Step 2: Convert to fraction form
    15,486.31/21,379.97 = 10,196.50/x
  3. Step 3: Cross multiply
    15,486.31x = 21,379.97 × 10,196.50
  4. Step 4: Simplify right side
    15,486.31x = 218,000,864.11
  5. Step 5: Solve for x
    x = 218,000,864.11/15,486.31
  6. Step 6: Final answer
    x = 14,077.01

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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.