Home / 28,245.12-42,327.36-14,403.84

Finding the Fourth Proportional to 28,245.12, 42,327.36 and 14,403.84

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Solution

The fourth proportional to 28,245.12, 42,327.36 and 14,403.84 is: 21,585.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,245.12 : 42,327.36 = 14,403.84 : x
  2. Step 2: Convert to fraction form
    28,245.12/42,327.36 = 14,403.84/x
  3. Step 3: Cross multiply
    28,245.12x = 42,327.36 × 14,403.84
  4. Step 4: Simplify right side
    28,245.12x = 609,676,521.06
  5. Step 5: Solve for x
    x = 609,676,521.06/28,245.12
  6. Step 6: Final answer
    x = 21,585.20

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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.