Home / 31,426.21-47,146.29-10,372.78

Finding the Fourth Proportional to 31,426.21, 47,146.29 and 10,372.78

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Solution

The fourth proportional to 31,426.21, 47,146.29 and 10,372.78 is: 15,561.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,426.21 : 47,146.29 = 10,372.78 : x
  2. Step 2: Convert to fraction form
    31,426.21/47,146.29 = 10,372.78/x
  3. Step 3: Cross multiply
    31,426.21x = 47,146.29 × 10,372.78
  4. Step 4: Simplify right side
    31,426.21x = 489,038,093.99
  5. Step 5: Solve for x
    x = 489,038,093.99/31,426.21
  6. Step 6: Final answer
    x = 15,561.47

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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.