Home / 31,416.56-47,123.70-7,724.21

Finding the Fourth Proportional to 31,416.56, 47,123.70 and 7,724.21

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Solution

The fourth proportional to 31,416.56, 47,123.70 and 7,724.21 is: 11,586.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,416.56 : 47,123.70 = 7,724.21 : x
  2. Step 2: Convert to fraction form
    31,416.56/47,123.70 = 7,724.21/x
  3. Step 3: Cross multiply
    31,416.56x = 47,123.70 × 7,724.21
  4. Step 4: Simplify right side
    31,416.56x = 363,993,376.99
  5. Step 5: Solve for x
    x = 363,993,376.99/31,416.56
  6. Step 6: Final answer
    x = 11,586.04

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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.