Home / 28,630.80-39,510.96-18,563.28

Finding the Fourth Proportional to 28,630.80, 39,510.96 and 18,563.28

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Solution

The fourth proportional to 28,630.80, 39,510.96 and 18,563.28 is: 25,617.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,630.80 : 39,510.96 = 18,563.28 : x
  2. Step 2: Convert to fraction form
    28,630.80/39,510.96 = 18,563.28/x
  3. Step 3: Cross multiply
    28,630.80x = 39,510.96 × 18,563.28
  4. Step 4: Simplify right side
    28,630.80x = 733,453,013.55
  5. Step 5: Solve for x
    x = 733,453,013.55/28,630.80
  6. Step 6: Final answer
    x = 25,617.62

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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.