Home / 28,530.83-42,805.46-13,740.84

Finding the Fourth Proportional to 28,530.83, 42,805.46 and 13,740.84

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Solution

The fourth proportional to 28,530.83, 42,805.46 and 13,740.84 is: 20,615.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,530.83 : 42,805.46 = 13,740.84 : x
  2. Step 2: Convert to fraction form
    28,530.83/42,805.46 = 13,740.84/x
  3. Step 3: Cross multiply
    28,530.83x = 42,805.46 × 13,740.84
  4. Step 4: Simplify right side
    28,530.83x = 588,183,011.34
  5. Step 5: Solve for x
    x = 588,183,011.34/28,530.83
  6. Step 6: Final answer
    x = 20,615.70

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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.