Home / 31,457.30-47,202.44-12,739.32

Finding the Fourth Proportional to 31,457.30, 47,202.44 and 12,739.32

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Solution

The fourth proportional to 31,457.30, 47,202.44 and 12,739.32 is: 19,115.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,457.30 : 47,202.44 = 12,739.32 : x
  2. Step 2: Convert to fraction form
    31,457.30/47,202.44 = 12,739.32/x
  3. Step 3: Cross multiply
    31,457.30x = 47,202.44 × 12,739.32
  4. Step 4: Simplify right side
    31,457.30x = 601,326,924.24
  5. Step 5: Solve for x
    x = 601,326,924.24/31,457.30
  6. Step 6: Final answer
    x = 19,115.66

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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.