Home / 30,989.88-42,762.56-17,558.27

Finding the Fourth Proportional to 30,989.88, 42,762.56 and 17,558.27

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Solution

The fourth proportional to 30,989.88, 42,762.56 and 17,558.27 is: 24,228.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,989.88 : 42,762.56 = 17,558.27 : x
  2. Step 2: Convert to fraction form
    30,989.88/42,762.56 = 17,558.27/x
  3. Step 3: Cross multiply
    30,989.88x = 42,762.56 × 17,558.27
  4. Step 4: Simplify right side
    30,989.88x = 750,836,272.77
  5. Step 5: Solve for x
    x = 750,836,272.77/30,989.88
  6. Step 6: Final answer
    x = 24,228.43

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1.5x scale

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.