Home / 12,587.45-18,876.24-5,189.99

Finding the Fourth Proportional to 12,587.45, 18,876.24 and 5,189.99

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Solution

The fourth proportional to 12,587.45, 18,876.24 and 5,189.99 is: 7,782.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,587.45 : 18,876.24 = 5,189.99 : x
  2. Step 2: Convert to fraction form
    12,587.45/18,876.24 = 5,189.99/x
  3. Step 3: Cross multiply
    12,587.45x = 18,876.24 × 5,189.99
  4. Step 4: Simplify right side
    12,587.45x = 97,967,402.46
  5. Step 5: Solve for x
    x = 97,967,402.46/12,587.45
  6. Step 6: Final answer
    x = 7,782.95

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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.