Home / 43,385.32-65,070.30-12,220.36

Finding the Fourth Proportional to 43,385.32, 65,070.30 and 12,220.36

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Solution

The fourth proportional to 43,385.32, 65,070.30 and 12,220.36 is: 18,328.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,385.32 : 65,070.30 = 12,220.36 : x
  2. Step 2: Convert to fraction form
    43,385.32/65,070.30 = 12,220.36/x
  3. Step 3: Cross multiply
    43,385.32x = 65,070.30 × 12,220.36
  4. Step 4: Simplify right side
    43,385.32x = 795,182,491.31
  5. Step 5: Solve for x
    x = 795,182,491.31/43,385.32
  6. Step 6: Final answer
    x = 18,328.38

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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.