Home / 20,709.09-31,063.64-5,126.72

Finding the Fourth Proportional to 20,709.09, 31,063.64 and 5,126.72

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Solution

The fourth proportional to 20,709.09, 31,063.64 and 5,126.72 is: 7,690.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,709.09 : 31,063.64 = 5,126.72 : x
  2. Step 2: Convert to fraction form
    20,709.09/31,063.64 = 5,126.72/x
  3. Step 3: Cross multiply
    20,709.09x = 31,063.64 × 5,126.72
  4. Step 4: Simplify right side
    20,709.09x = 159,254,548.84
  5. Step 5: Solve for x
    x = 159,254,548.84/20,709.09
  6. Step 6: Final answer
    x = 7,690.08

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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.