Home / 20,835.04-31,256.52-7,688.44

Finding the Fourth Proportional to 20,835.04, 31,256.52 and 7,688.44

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Solution

The fourth proportional to 20,835.04, 31,256.52 and 7,688.44 is: 11,534.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.04 : 31,256.52 = 7,688.44 : x
  2. Step 2: Convert to fraction form
    20,835.04/31,256.52 = 7,688.44/x
  3. Step 3: Cross multiply
    20,835.04x = 31,256.52 × 7,688.44
  4. Step 4: Simplify right side
    20,835.04x = 240,313,878.63
  5. Step 5: Solve for x
    x = 240,313,878.63/20,835.04
  6. Step 6: Final answer
    x = 11,534.12

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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.