Home / 31,389.12-47,073.60-13,858.56

Finding the Fourth Proportional to 31,389.12, 47,073.60 and 13,858.56

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Solution

The fourth proportional to 31,389.12, 47,073.60 and 13,858.56 is: 20,783.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,389.12 : 47,073.60 = 13,858.56 : x
  2. Step 2: Convert to fraction form
    31,389.12/47,073.60 = 13,858.56/x
  3. Step 3: Cross multiply
    31,389.12x = 47,073.60 × 13,858.56
  4. Step 4: Simplify right side
    31,389.12x = 652,372,310.02
  5. Step 5: Solve for x
    x = 652,372,310.02/31,389.12
  6. Step 6: Final answer
    x = 20,783.39

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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.