Home / 12,968.86-19,322.70-12,120.16

Finding the Fourth Proportional to 12,968.86, 19,322.70 and 12,120.16

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Solution

The fourth proportional to 12,968.86, 19,322.70 and 12,120.16 is: 18,058.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,968.86 : 19,322.70 = 12,120.16 : x
  2. Step 2: Convert to fraction form
    12,968.86/19,322.70 = 12,120.16/x
  3. Step 3: Cross multiply
    12,968.86x = 19,322.70 × 12,120.16
  4. Step 4: Simplify right side
    12,968.86x = 234,194,215.63
  5. Step 5: Solve for x
    x = 234,194,215.63/12,968.86
  6. Step 6: Final answer
    x = 18,058.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.