Home / 15,816.33-21,808.73-10,783.49

Finding the Fourth Proportional to 15,816.33, 21,808.73 and 10,783.49

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Solution

The fourth proportional to 15,816.33, 21,808.73 and 10,783.49 is: 14,869.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,816.33 : 21,808.73 = 10,783.49 : x
  2. Step 2: Convert to fraction form
    15,816.33/21,808.73 = 10,783.49/x
  3. Step 3: Cross multiply
    15,816.33x = 21,808.73 × 10,783.49
  4. Step 4: Simplify right side
    15,816.33x = 235,174,139.78
  5. Step 5: Solve for x
    x = 235,174,139.78/15,816.33
  6. Step 6: Final answer
    x = 14,869.07

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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.