Home / 19,670.98-27,141.12-12,018.28

Finding the Fourth Proportional to 19,670.98, 27,141.12 and 12,018.28

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Solution

The fourth proportional to 19,670.98, 27,141.12 and 12,018.28 is: 16,582.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,670.98 : 27,141.12 = 12,018.28 : x
  2. Step 2: Convert to fraction form
    19,670.98/27,141.12 = 12,018.28/x
  3. Step 3: Cross multiply
    19,670.98x = 27,141.12 × 12,018.28
  4. Step 4: Simplify right side
    19,670.98x = 326,189,579.67
  5. Step 5: Solve for x
    x = 326,189,579.67/19,670.98
  6. Step 6: Final answer
    x = 16,582.27

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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.