Home / 31,608.09-47,412.12-9,420.90

Finding the Fourth Proportional to 31,608.09, 47,412.12 and 9,420.90

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Solution

The fourth proportional to 31,608.09, 47,412.12 and 9,420.90 is: 14,131.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,608.09 : 47,412.12 = 9,420.90 : x
  2. Step 2: Convert to fraction form
    31,608.09/47,412.12 = 9,420.90/x
  3. Step 3: Cross multiply
    31,608.09x = 47,412.12 × 9,420.90
  4. Step 4: Simplify right side
    31,608.09x = 446,664,841.31
  5. Step 5: Solve for x
    x = 446,664,841.31/31,608.09
  6. Step 6: Final answer
    x = 14,131.35

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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.