Home / 26,389.72-36,420.56-15,641

Finding the Fourth Proportional to 26,389.72, 36,420.56 and 15,641

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Solution

The fourth proportional to 26,389.72, 36,420.56 and 15,641 is: 21,586.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,389.72 : 36,420.56 = 15,641 : x
  2. Step 2: Convert to fraction form
    26,389.72/36,420.56 = 15,641/x
  3. Step 3: Cross multiply
    26,389.72x = 36,420.56 × 15,641
  4. Step 4: Simplify right side
    26,389.72x = 569,653,978.96
  5. Step 5: Solve for x
    x = 569,653,978.96/26,389.72
  6. Step 6: Final answer
    x = 21,586.21

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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.