Home / 19,176.19-28,749.89-12,918.64

Finding the Fourth Proportional to 19,176.19, 28,749.89 and 12,918.64

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Solution

The fourth proportional to 19,176.19, 28,749.89 and 12,918.64 is: 19,368.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,176.19 : 28,749.89 = 12,918.64 : x
  2. Step 2: Convert to fraction form
    19,176.19/28,749.89 = 12,918.64/x
  3. Step 3: Cross multiply
    19,176.19x = 28,749.89 × 12,918.64
  4. Step 4: Simplify right side
    19,176.19x = 371,409,420.61
  5. Step 5: Solve for x
    x = 371,409,420.61/19,176.19
  6. Step 6: Final answer
    x = 19,368.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.