Home / 30,836.80-42,554.78-16,689.64

Finding the Fourth Proportional to 30,836.80, 42,554.78 and 16,689.64

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Solution

The fourth proportional to 30,836.80, 42,554.78 and 16,689.64 is: 23,031.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,836.80 : 42,554.78 = 16,689.64 : x
  2. Step 2: Convert to fraction form
    30,836.80/42,554.78 = 16,689.64/x
  3. Step 3: Cross multiply
    30,836.80x = 42,554.78 × 16,689.64
  4. Step 4: Simplify right side
    30,836.80x = 710,223,958.48
  5. Step 5: Solve for x
    x = 710,223,958.48/30,836.80
  6. Step 6: Final answer
    x = 23,031.70

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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.