Home / 28,420.10-42,630.24-8,698.58

Finding the Fourth Proportional to 28,420.10, 42,630.24 and 8,698.58

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Solution

The fourth proportional to 28,420.10, 42,630.24 and 8,698.58 is: 13,047.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,420.10 : 42,630.24 = 8,698.58 : x
  2. Step 2: Convert to fraction form
    28,420.10/42,630.24 = 8,698.58/x
  3. Step 3: Cross multiply
    28,420.10x = 42,630.24 × 8,698.58
  4. Step 4: Simplify right side
    28,420.10x = 370,822,553.06
  5. Step 5: Solve for x
    x = 370,822,553.06/28,420.10
  6. Step 6: Final answer
    x = 13,047.90

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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.