Home / 20,521.56-28,334.92-12,574.64

Finding the Fourth Proportional to 20,521.56, 28,334.92 and 12,574.64

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Solution

The fourth proportional to 20,521.56, 28,334.92 and 12,574.64 is: 17,362.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,521.56 : 28,334.92 = 12,574.64 : x
  2. Step 2: Convert to fraction form
    20,521.56/28,334.92 = 12,574.64/x
  3. Step 3: Cross multiply
    20,521.56x = 28,334.92 × 12,574.64
  4. Step 4: Simplify right side
    20,521.56x = 356,301,418.43
  5. Step 5: Solve for x
    x = 356,301,418.43/20,521.56
  6. Step 6: Final answer
    x = 17,362.30

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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.