Home / 21,365.83-29,487.81-11,935

Finding the Fourth Proportional to 21,365.83, 29,487.81 and 11,935

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Solution

The fourth proportional to 21,365.83, 29,487.81 and 11,935 is: 16,471.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,365.83 : 29,487.81 = 11,935 : x
  2. Step 2: Convert to fraction form
    21,365.83/29,487.81 = 11,935/x
  3. Step 3: Cross multiply
    21,365.83x = 29,487.81 × 11,935
  4. Step 4: Simplify right side
    21,365.83x = 351,937,012.35
  5. Step 5: Solve for x
    x = 351,937,012.35/21,365.83
  6. Step 6: Final answer
    x = 16,471.96

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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.