Home / 30,421.78-41,981.09-17,676.02

Finding the Fourth Proportional to 30,421.78, 41,981.09 and 17,676.02

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Solution

The fourth proportional to 30,421.78, 41,981.09 and 17,676.02 is: 24,392.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,421.78 : 41,981.09 = 17,676.02 : x
  2. Step 2: Convert to fraction form
    30,421.78/41,981.09 = 17,676.02/x
  3. Step 3: Cross multiply
    30,421.78x = 41,981.09 × 17,676.02
  4. Step 4: Simplify right side
    30,421.78x = 742,058,603.03
  5. Step 5: Solve for x
    x = 742,058,603.03/30,421.78
  6. Step 6: Final answer
    x = 24,392.35

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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.