Home / 28,346.90-42,520.37-12,746.30

Finding the Fourth Proportional to 28,346.90, 42,520.37 and 12,746.30

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Solution

The fourth proportional to 28,346.90, 42,520.37 and 12,746.30 is: 19,119.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,346.90 : 42,520.37 = 12,746.30 : x
  2. Step 2: Convert to fraction form
    28,346.90/42,520.37 = 12,746.30/x
  3. Step 3: Cross multiply
    28,346.90x = 42,520.37 × 12,746.30
  4. Step 4: Simplify right side
    28,346.90x = 541,977,115.80
  5. Step 5: Solve for x
    x = 541,977,115.80/28,346.90
  6. Step 6: Final answer
    x = 19,119.45

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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.