Home / 30,498.78-42,089.10-17,072.34

Finding the Fourth Proportional to 30,498.78, 42,089.10 and 17,072.34

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Solution

The fourth proportional to 30,498.78, 42,089.10 and 17,072.34 is: 23,560.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,498.78 : 42,089.10 = 17,072.34 : x
  2. Step 2: Convert to fraction form
    30,498.78/42,089.10 = 17,072.34/x
  3. Step 3: Cross multiply
    30,498.78x = 42,089.10 × 17,072.34
  4. Step 4: Simplify right side
    30,498.78x = 718,559,425.49
  5. Step 5: Solve for x
    x = 718,559,425.49/30,498.78
  6. Step 6: Final answer
    x = 23,560.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.