Home / 28,638.02-42,963.20-8,645.85

Finding the Fourth Proportional to 28,638.02, 42,963.20 and 8,645.85

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Solution

The fourth proportional to 28,638.02, 42,963.20 and 8,645.85 is: 12,970.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,638.02 : 42,963.20 = 8,645.85 : x
  2. Step 2: Convert to fraction form
    28,638.02/42,963.20 = 8,645.85/x
  3. Step 3: Cross multiply
    28,638.02x = 42,963.20 × 8,645.85
  4. Step 4: Simplify right side
    28,638.02x = 371,453,339.49
  5. Step 5: Solve for x
    x = 371,453,339.49/28,638.02
  6. Step 6: Final answer
    x = 12,970.64

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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.