Home / 28,434.40-42,654.56-10,918.88

Finding the Fourth Proportional to 28,434.40, 42,654.56 and 10,918.88

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Solution

The fourth proportional to 28,434.40, 42,654.56 and 10,918.88 is: 16,379.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,434.40 : 42,654.56 = 10,918.88 : x
  2. Step 2: Convert to fraction form
    28,434.40/42,654.56 = 10,918.88/x
  3. Step 3: Cross multiply
    28,434.40x = 42,654.56 × 10,918.88
  4. Step 4: Simplify right side
    28,434.40x = 465,740,022.09
  5. Step 5: Solve for x
    x = 465,740,022.09/28,434.40
  6. Step 6: Final answer
    x = 16,379.46

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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.