Home / 28,627.20-42,940.80-16,934.40

Finding the Fourth Proportional to 28,627.20, 42,940.80 and 16,934.40

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Solution

The fourth proportional to 28,627.20, 42,940.80 and 16,934.40 is: 25,401.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,627.20 : 42,940.80 = 16,934.40 : x
  2. Step 2: Convert to fraction form
    28,627.20/42,940.80 = 16,934.40/x
  3. Step 3: Cross multiply
    28,627.20x = 42,940.80 × 16,934.40
  4. Step 4: Simplify right side
    28,627.20x = 727,176,683.52
  5. Step 5: Solve for x
    x = 727,176,683.52/28,627.20
  6. Step 6: Final answer
    x = 25,401.60

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1.5x scale

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.