Home / 30,908.42-42,653.64-16,761.28

Finding the Fourth Proportional to 30,908.42, 42,653.64 and 16,761.28

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Solution

The fourth proportional to 30,908.42, 42,653.64 and 16,761.28 is: 23,130.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,908.42 : 42,653.64 = 16,761.28 : x
  2. Step 2: Convert to fraction form
    30,908.42/42,653.64 = 16,761.28/x
  3. Step 3: Cross multiply
    30,908.42x = 42,653.64 × 16,761.28
  4. Step 4: Simplify right side
    30,908.42x = 714,929,603.06
  5. Step 5: Solve for x
    x = 714,929,603.06/30,908.42
  6. Step 6: Final answer
    x = 23,130.58

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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.