Home / 15,816.70-21,809.26-10,783.86

Finding the Fourth Proportional to 15,816.70, 21,809.26 and 10,783.86

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Solution

The fourth proportional to 15,816.70, 21,809.26 and 10,783.86 is: 14,869.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,816.70 : 21,809.26 = 10,783.86 : x
  2. Step 2: Convert to fraction form
    15,816.70/21,809.26 = 10,783.86/x
  3. Step 3: Cross multiply
    15,816.70x = 21,809.26 × 10,783.86
  4. Step 4: Simplify right side
    15,816.70x = 235,188,006.54
  5. Step 5: Solve for x
    x = 235,188,006.54/15,816.70
  6. Step 6: Final answer
    x = 14,869.60

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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.