Home / 20,972.36-31,461.77-7,646.48

Finding the Fourth Proportional to 20,972.36, 31,461.77 and 7,646.48

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Solution

The fourth proportional to 20,972.36, 31,461.77 and 7,646.48 is: 11,470.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972.36 : 31,461.77 = 7,646.48 : x
  2. Step 2: Convert to fraction form
    20,972.36/31,461.77 = 7,646.48/x
  3. Step 3: Cross multiply
    20,972.36x = 31,461.77 × 7,646.48
  4. Step 4: Simplify right side
    20,972.36x = 240,571,656.88
  5. Step 5: Solve for x
    x = 240,571,656.88/20,972.36
  6. Step 6: Final answer
    x = 11,470.89

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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.