Home / 31,392.80-47,085.68-19,670.56

Finding the Fourth Proportional to 31,392.80, 47,085.68 and 19,670.56

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Solution

The fourth proportional to 31,392.80, 47,085.68 and 19,670.56 is: 29,503.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,392.80 : 47,085.68 = 19,670.56 : x
  2. Step 2: Convert to fraction form
    31,392.80/47,085.68 = 19,670.56/x
  3. Step 3: Cross multiply
    31,392.80x = 47,085.68 × 19,670.56
  4. Step 4: Simplify right side
    31,392.80x = 926,201,693.58
  5. Step 5: Solve for x
    x = 926,201,693.58/31,392.80
  6. Step 6: Final answer
    x = 29,503.63

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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.