Home / 12,840.28-19,259.88-4,520.32

Finding the Fourth Proportional to 12,840.28, 19,259.88 and 4,520.32

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Solution

The fourth proportional to 12,840.28, 19,259.88 and 4,520.32 is: 6,780.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,840.28 : 19,259.88 = 4,520.32 : x
  2. Step 2: Convert to fraction form
    12,840.28/19,259.88 = 4,520.32/x
  3. Step 3: Cross multiply
    12,840.28x = 19,259.88 × 4,520.32
  4. Step 4: Simplify right side
    12,840.28x = 87,060,820.76
  5. Step 5: Solve for x
    x = 87,060,820.76/12,840.28
  6. Step 6: Final answer
    x = 6,780.29

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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.