Home / 31,412.02-47,120.31-11,690.57

Finding the Fourth Proportional to 31,412.02, 47,120.31 and 11,690.57

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Solution

The fourth proportional to 31,412.02, 47,120.31 and 11,690.57 is: 17,536.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,412.02 : 47,120.31 = 11,690.57 : x
  2. Step 2: Convert to fraction form
    31,412.02/47,120.31 = 11,690.57/x
  3. Step 3: Cross multiply
    31,412.02x = 47,120.31 × 11,690.57
  4. Step 4: Simplify right side
    31,412.02x = 550,863,046.88
  5. Step 5: Solve for x
    x = 550,863,046.88/31,412.02
  6. Step 6: Final answer
    x = 17,536.70

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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.