Home / 19,802.18-27,327.30-12,730.88

Finding the Fourth Proportional to 19,802.18, 27,327.30 and 12,730.88

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Solution

The fourth proportional to 19,802.18, 27,327.30 and 12,730.88 is: 17,568.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,802.18 : 27,327.30 = 12,730.88 : x
  2. Step 2: Convert to fraction form
    19,802.18/27,327.30 = 12,730.88/x
  3. Step 3: Cross multiply
    19,802.18x = 27,327.30 × 12,730.88
  4. Step 4: Simplify right side
    19,802.18x = 347,900,577.02
  5. Step 5: Solve for x
    x = 347,900,577.02/19,802.18
  6. Step 6: Final answer
    x = 17,568.80

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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.