Home / 20,709.58-31,063.98-5,127.20

Finding the Fourth Proportional to 20,709.58, 31,063.98 and 5,127.20

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Solution

The fourth proportional to 20,709.58, 31,063.98 and 5,127.20 is: 7,690.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,709.58 : 31,063.98 = 5,127.20 : x
  2. Step 2: Convert to fraction form
    20,709.58/31,063.98 = 5,127.20/x
  3. Step 3: Cross multiply
    20,709.58x = 31,063.98 × 5,127.20
  4. Step 4: Simplify right side
    20,709.58x = 159,271,238.26
  5. Step 5: Solve for x
    x = 159,271,238.26/20,709.58
  6. Step 6: Final answer
    x = 7,690.70

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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.