Home / 20,709.78-31,045.98-7,559.04

Finding the Fourth Proportional to 20,709.78, 31,045.98 and 7,559.04

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Solution

The fourth proportional to 20,709.78, 31,045.98 and 7,559.04 is: 11,331.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,709.78 : 31,045.98 = 7,559.04 : x
  2. Step 2: Convert to fraction form
    20,709.78/31,045.98 = 7,559.04/x
  3. Step 3: Cross multiply
    20,709.78x = 31,045.98 × 7,559.04
  4. Step 4: Simplify right side
    20,709.78x = 234,677,804.66
  5. Step 5: Solve for x
    x = 234,677,804.66/20,709.78
  6. Step 6: Final answer
    x = 11,331.74

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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.