Home / 20,661.66-28,526.82-15,873.07

Finding the Fourth Proportional to 20,661.66, 28,526.82 and 15,873.07

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Solution

The fourth proportional to 20,661.66, 28,526.82 and 15,873.07 is: 21,915.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,661.66 : 28,526.82 = 15,873.07 : x
  2. Step 2: Convert to fraction form
    20,661.66/28,526.82 = 15,873.07/x
  3. Step 3: Cross multiply
    20,661.66x = 28,526.82 × 15,873.07
  4. Step 4: Simplify right side
    20,661.66x = 452,808,131.37
  5. Step 5: Solve for x
    x = 452,808,131.37/20,661.66
  6. Step 6: Final answer
    x = 21,915.39

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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.