Home / 20,636.40-31,008.96-11,282.40

Finding the Fourth Proportional to 20,636.40, 31,008.96 and 11,282.40

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Solution

The fourth proportional to 20,636.40, 31,008.96 and 11,282.40 is: 16,953.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,636.40 : 31,008.96 = 11,282.40 : x
  2. Step 2: Convert to fraction form
    20,636.40/31,008.96 = 11,282.40/x
  3. Step 3: Cross multiply
    20,636.40x = 31,008.96 × 11,282.40
  4. Step 4: Simplify right side
    20,636.40x = 349,855,490.30
  5. Step 5: Solve for x
    x = 349,855,490.30/20,636.40
  6. Step 6: Final answer
    x = 16,953.32

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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.