Home / 20,703.13-31,055.20-7,555.49

Finding the Fourth Proportional to 20,703.13, 31,055.20 and 7,555.49

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Solution

The fourth proportional to 20,703.13, 31,055.20 and 7,555.49 is: 11,333.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,703.13 : 31,055.20 = 7,555.49 : x
  2. Step 2: Convert to fraction form
    20,703.13/31,055.20 = 7,555.49/x
  3. Step 3: Cross multiply
    20,703.13x = 31,055.20 × 7,555.49
  4. Step 4: Simplify right side
    20,703.13x = 234,637,253.05
  5. Step 5: Solve for x
    x = 234,637,253.05/20,703.13
  6. Step 6: Final answer
    x = 11,333.42

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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.