Home / 35,814.48-53,647.89-20,978.42

Finding the Fourth Proportional to 35,814.48, 53,647.89 and 20,978.42

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Solution

The fourth proportional to 35,814.48, 53,647.89 and 20,978.42 is: 31,424.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,814.48 : 53,647.89 = 20,978.42 : x
  2. Step 2: Convert to fraction form
    35,814.48/53,647.89 = 20,978.42/x
  3. Step 3: Cross multiply
    35,814.48x = 53,647.89 × 20,978.42
  4. Step 4: Simplify right side
    35,814.48x = 1,125,447,621.63
  5. Step 5: Solve for x
    x = 1,125,447,621.63/35,814.48
  6. Step 6: Final answer
    x = 31,424.38

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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.