Home / 28,308.89-42,417.17-17,218.98

Finding the Fourth Proportional to 28,308.89, 42,417.17 and 17,218.98

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Solution

The fourth proportional to 28,308.89, 42,417.17 and 17,218.98 is: 25,800.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,308.89 : 42,417.17 = 17,218.98 : x
  2. Step 2: Convert to fraction form
    28,308.89/42,417.17 = 17,218.98/x
  3. Step 3: Cross multiply
    28,308.89x = 42,417.17 × 17,218.98
  4. Step 4: Simplify right side
    28,308.89x = 730,380,380.36
  5. Step 5: Solve for x
    x = 730,380,380.36/28,308.89
  6. Step 6: Final answer
    x = 25,800.39

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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.