Home / 20,710.80-31,058.10-7,556.40

Finding the Fourth Proportional to 20,710.80, 31,058.10 and 7,556.40

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Solution

The fourth proportional to 20,710.80, 31,058.10 and 7,556.40 is: 11,331.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,710.80 : 31,058.10 = 7,556.40 : x
  2. Step 2: Convert to fraction form
    20,710.80/31,058.10 = 7,556.40/x
  3. Step 3: Cross multiply
    20,710.80x = 31,058.10 × 7,556.40
  4. Step 4: Simplify right side
    20,710.80x = 234,687,426.84
  5. Step 5: Solve for x
    x = 234,687,426.84/20,710.80
  6. Step 6: Final answer
    x = 11,331.64

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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.