Home / 20,737.83-31,109.88-7,587.08

Finding the Fourth Proportional to 20,737.83, 31,109.88 and 7,587.08

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Solution

The fourth proportional to 20,737.83, 31,109.88 and 7,587.08 is: 11,381.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,737.83 : 31,109.88 = 7,587.08 : x
  2. Step 2: Convert to fraction form
    20,737.83/31,109.88 = 7,587.08/x
  3. Step 3: Cross multiply
    20,737.83x = 31,109.88 × 7,587.08
  4. Step 4: Simplify right side
    20,737.83x = 236,032,992.80
  5. Step 5: Solve for x
    x = 236,032,992.80/20,737.83
  6. Step 6: Final answer
    x = 11,381.76

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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.