Home / 20,762.40-31,125.08-7,611.70

Finding the Fourth Proportional to 20,762.40, 31,125.08 and 7,611.70

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Solution

The fourth proportional to 20,762.40, 31,125.08 and 7,611.70 is: 11,410.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,762.40 : 31,125.08 = 7,611.70 : x
  2. Step 2: Convert to fraction form
    20,762.40/31,125.08 = 7,611.70/x
  3. Step 3: Cross multiply
    20,762.40x = 31,125.08 × 7,611.70
  4. Step 4: Simplify right side
    20,762.40x = 236,914,733.38
  5. Step 5: Solve for x
    x = 236,914,733.38/20,762.40
  6. Step 6: Final answer
    x = 11,410.76

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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.