Home / 31,178.78-46,770.54-10,402.28

Finding the Fourth Proportional to 31,178.78, 46,770.54 and 10,402.28

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Solution

The fourth proportional to 31,178.78, 46,770.54 and 10,402.28 is: 15,604.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,178.78 : 46,770.54 = 10,402.28 : x
  2. Step 2: Convert to fraction form
    31,178.78/46,770.54 = 10,402.28/x
  3. Step 3: Cross multiply
    31,178.78x = 46,770.54 × 10,402.28
  4. Step 4: Simplify right side
    31,178.78x = 486,520,252.83
  5. Step 5: Solve for x
    x = 486,520,252.83/31,178.78
  6. Step 6: Final answer
    x = 15,604.21

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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.