Home / 31,429.48-47,144.12-12,709.30

Finding the Fourth Proportional to 31,429.48, 47,144.12 and 12,709.30

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Solution

The fourth proportional to 31,429.48, 47,144.12 and 12,709.30 is: 19,063.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,429.48 : 47,144.12 = 12,709.30 : x
  2. Step 2: Convert to fraction form
    31,429.48/47,144.12 = 12,709.30/x
  3. Step 3: Cross multiply
    31,429.48x = 47,144.12 × 12,709.30
  4. Step 4: Simplify right side
    31,429.48x = 599,168,764.32
  5. Step 5: Solve for x
    x = 599,168,764.32/31,429.48
  6. Step 6: Final answer
    x = 19,063.91

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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.