Home / 42,989.09-64,462.86-18,022.43

Finding the Fourth Proportional to 42,989.09, 64,462.86 and 18,022.43

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Solution

The fourth proportional to 42,989.09, 64,462.86 and 18,022.43 is: 27,024.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,989.09 : 64,462.86 = 18,022.43 : x
  2. Step 2: Convert to fraction form
    42,989.09/64,462.86 = 18,022.43/x
  3. Step 3: Cross multiply
    42,989.09x = 64,462.86 × 18,022.43
  4. Step 4: Simplify right side
    42,989.09x = 1,161,777,543.11
  5. Step 5: Solve for x
    x = 1,161,777,543.11/42,989.09
  6. Step 6: Final answer
    x = 27,024.94

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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.