Home / 30,676.86-42,335.28-17,938.26

Finding the Fourth Proportional to 30,676.86, 42,335.28 and 17,938.26

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Solution

The fourth proportional to 30,676.86, 42,335.28 and 17,938.26 is: 24,755.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,676.86 : 42,335.28 = 17,938.26 : x
  2. Step 2: Convert to fraction form
    30,676.86/42,335.28 = 17,938.26/x
  3. Step 3: Cross multiply
    30,676.86x = 42,335.28 × 17,938.26
  4. Step 4: Simplify right side
    30,676.86x = 759,421,259.81
  5. Step 5: Solve for x
    x = 759,421,259.81/30,676.86
  6. Step 6: Final answer
    x = 24,755.51

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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.