Home / 31,606.09-47,409.12-9,418.90

Finding the Fourth Proportional to 31,606.09, 47,409.12 and 9,418.90

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Solution

The fourth proportional to 31,606.09, 47,409.12 and 9,418.90 is: 14,128.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,606.09 : 47,409.12 = 9,418.90 : x
  2. Step 2: Convert to fraction form
    31,606.09/47,409.12 = 9,418.90/x
  3. Step 3: Cross multiply
    31,606.09x = 47,409.12 × 9,418.90
  4. Step 4: Simplify right side
    31,606.09x = 446,541,760.37
  5. Step 5: Solve for x
    x = 446,541,760.37/31,606.09
  6. Step 6: Final answer
    x = 14,128.35

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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.