Home / 31,458.89-47,178.32-10,394.99

Finding the Fourth Proportional to 31,458.89, 47,178.32 and 10,394.99

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Solution

The fourth proportional to 31,458.89, 47,178.32 and 10,394.99 is: 15,589.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,458.89 : 47,178.32 = 10,394.99 : x
  2. Step 2: Convert to fraction form
    31,458.89/47,178.32 = 10,394.99/x
  3. Step 3: Cross multiply
    31,458.89x = 47,178.32 × 10,394.99
  4. Step 4: Simplify right side
    31,458.89x = 490,418,230.59
  5. Step 5: Solve for x
    x = 490,418,230.59/31,458.89
  6. Step 6: Final answer
    x = 15,589.18

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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.