Home / 30,963.09-42,729.24-16,815.93

Finding the Fourth Proportional to 30,963.09, 42,729.24 and 16,815.93

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Solution

The fourth proportional to 30,963.09, 42,729.24 and 16,815.93 is: 23,206.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,963.09 : 42,729.24 = 16,815.93 : x
  2. Step 2: Convert to fraction form
    30,963.09/42,729.24 = 16,815.93/x
  3. Step 3: Cross multiply
    30,963.09x = 42,729.24 × 16,815.93
  4. Step 4: Simplify right side
    30,963.09x = 718,531,908.79
  5. Step 5: Solve for x
    x = 718,531,908.79/30,963.09
  6. Step 6: Final answer
    x = 23,206.08

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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.