Home / 20,957.48-31,435.82-8,477.36

Finding the Fourth Proportional to 20,957.48, 31,435.82 and 8,477.36

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Solution

The fourth proportional to 20,957.48, 31,435.82 and 8,477.36 is: 12,715.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,957.48 : 31,435.82 = 8,477.36 : x
  2. Step 2: Convert to fraction form
    20,957.48/31,435.82 = 8,477.36/x
  3. Step 3: Cross multiply
    20,957.48x = 31,435.82 × 8,477.36
  4. Step 4: Simplify right side
    20,957.48x = 266,492,763.04
  5. Step 5: Solve for x
    x = 266,492,763.04/20,957.48
  6. Step 6: Final answer
    x = 12,715.88

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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.