Home / 18,789.13-25,929-10,405.63

Finding the Fourth Proportional to 18,789.13, 25,929 and 10,405.63

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Solution

The fourth proportional to 18,789.13, 25,929 and 10,405.63 is: 14,359.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,789.13 : 25,929 = 10,405.63 : x
  2. Step 2: Convert to fraction form
    18,789.13/25,929 = 10,405.63/x
  3. Step 3: Cross multiply
    18,789.13x = 25,929 × 10,405.63
  4. Step 4: Simplify right side
    18,789.13x = 269,807,580.27
  5. Step 5: Solve for x
    x = 269,807,580.27/18,789.13
  6. Step 6: Final answer
    x = 14,359.77

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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.