Home / 13,130.22-19,618.44-12,670.86

Finding the Fourth Proportional to 13,130.22, 19,618.44 and 12,670.86

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Solution

The fourth proportional to 13,130.22, 19,618.44 and 12,670.86 is: 18,932.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,130.22 : 19,618.44 = 12,670.86 : x
  2. Step 2: Convert to fraction form
    13,130.22/19,618.44 = 12,670.86/x
  3. Step 3: Cross multiply
    13,130.22x = 19,618.44 × 12,670.86
  4. Step 4: Simplify right side
    13,130.22x = 248,582,506.66
  5. Step 5: Solve for x
    x = 248,582,506.66/13,130.22
  6. Step 6: Final answer
    x = 18,932.09

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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.