Home / 34,218.36-51,330.78-13,437

Finding the Fourth Proportional to 34,218.36, 51,330.78 and 13,437

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Solution

The fourth proportional to 34,218.36, 51,330.78 and 13,437 is: 20,156.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,218.36 : 51,330.78 = 13,437 : x
  2. Step 2: Convert to fraction form
    34,218.36/51,330.78 = 13,437/x
  3. Step 3: Cross multiply
    34,218.36x = 51,330.78 × 13,437
  4. Step 4: Simplify right side
    34,218.36x = 689,731,690.86
  5. Step 5: Solve for x
    x = 689,731,690.86/34,218.36
  6. Step 6: Final answer
    x = 20,156.77

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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.