Home / 12,590.07-18,868.95-10,638.69

Finding the Fourth Proportional to 12,590.07, 18,868.95 and 10,638.69

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Solution

The fourth proportional to 12,590.07, 18,868.95 and 10,638.69 is: 15,944.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,590.07 : 18,868.95 = 10,638.69 : x
  2. Step 2: Convert to fraction form
    12,590.07/18,868.95 = 10,638.69/x
  3. Step 3: Cross multiply
    12,590.07x = 18,868.95 × 10,638.69
  4. Step 4: Simplify right side
    12,590.07x = 200,740,909.68
  5. Step 5: Solve for x
    x = 200,740,909.68/12,590.07
  6. Step 6: Final answer
    x = 15,944.38

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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.