Home / 19,128.55-26,389.84-11,060.72

Finding the Fourth Proportional to 19,128.55, 26,389.84 and 11,060.72

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Solution

The fourth proportional to 19,128.55, 26,389.84 and 11,060.72 is: 15,259.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,128.55 : 26,389.84 = 11,060.72 : x
  2. Step 2: Convert to fraction form
    19,128.55/26,389.84 = 11,060.72/x
  3. Step 3: Cross multiply
    19,128.55x = 26,389.84 × 11,060.72
  4. Step 4: Simplify right side
    19,128.55x = 291,890,631.30
  5. Step 5: Solve for x
    x = 291,890,631.30/19,128.55
  6. Step 6: Final answer
    x = 15,259.42

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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.