Home / 19,818.60-27,368.18-12,757.28

Finding the Fourth Proportional to 19,818.60, 27,368.18 and 12,757.28

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Solution

The fourth proportional to 19,818.60, 27,368.18 and 12,757.28 is: 17,616.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,818.60 : 27,368.18 = 12,757.28 : x
  2. Step 2: Convert to fraction form
    19,818.60/27,368.18 = 12,757.28/x
  3. Step 3: Cross multiply
    19,818.60x = 27,368.18 × 12,757.28
  4. Step 4: Simplify right side
    19,818.60x = 349,143,535.35
  5. Step 5: Solve for x
    x = 349,143,535.35/19,818.60
  6. Step 6: Final answer
    x = 17,616.96

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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.