Home / 20,661.94-28,525.18-15,807.53

Finding the Fourth Proportional to 20,661.94, 28,525.18 and 15,807.53

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Solution

The fourth proportional to 20,661.94, 28,525.18 and 15,807.53 is: 21,823.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,661.94 : 28,525.18 = 15,807.53 : x
  2. Step 2: Convert to fraction form
    20,661.94/28,525.18 = 15,807.53/x
  3. Step 3: Cross multiply
    20,661.94x = 28,525.18 × 15,807.53
  4. Step 4: Simplify right side
    20,661.94x = 450,912,806.84
  5. Step 5: Solve for x
    x = 450,912,806.84/20,661.94
  6. Step 6: Final answer
    x = 21,823.36

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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.