Home / 22,809.60-31,477.40-12,738.16

Finding the Fourth Proportional to 22,809.60, 31,477.40 and 12,738.16

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Solution

The fourth proportional to 22,809.60, 31,477.40 and 12,738.16 is: 17,578.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,809.60 : 31,477.40 = 12,738.16 : x
  2. Step 2: Convert to fraction form
    22,809.60/31,477.40 = 12,738.16/x
  3. Step 3: Cross multiply
    22,809.60x = 31,477.40 × 12,738.16
  4. Step 4: Simplify right side
    22,809.60x = 400,964,157.58
  5. Step 5: Solve for x
    x = 400,964,157.58/22,809.60
  6. Step 6: Final answer
    x = 17,578.75

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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.