Home / 18,913.23-26,111.84-12,545.37

Finding the Fourth Proportional to 18,913.23, 26,111.84 and 12,545.37

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Solution

The fourth proportional to 18,913.23, 26,111.84 and 12,545.37 is: 17,320.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,913.23 : 26,111.84 = 12,545.37 : x
  2. Step 2: Convert to fraction form
    18,913.23/26,111.84 = 12,545.37/x
  3. Step 3: Cross multiply
    18,913.23x = 26,111.84 × 12,545.37
  4. Step 4: Simplify right side
    18,913.23x = 327,582,631.45
  5. Step 5: Solve for x
    x = 327,582,631.45/18,913.23
  6. Step 6: Final answer
    x = 17,320.29

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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.