Home / 12,587.04-18,882.83-5,187.38

Finding the Fourth Proportional to 12,587.04, 18,882.83 and 5,187.38

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Solution

The fourth proportional to 12,587.04, 18,882.83 and 5,187.38 is: 7,782.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,587.04 : 18,882.83 = 5,187.38 : x
  2. Step 2: Convert to fraction form
    12,587.04/18,882.83 = 5,187.38/x
  3. Step 3: Cross multiply
    12,587.04x = 18,882.83 × 5,187.38
  4. Step 4: Simplify right side
    12,587.04x = 97,952,414.69
  5. Step 5: Solve for x
    x = 97,952,414.69/12,587.04
  6. Step 6: Final answer
    x = 7,782.01

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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.