Home / 10,138.45-13,988.67-5,886.99

Finding the Fourth Proportional to 10,138.45, 13,988.67 and 5,886.99

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Solution

The fourth proportional to 10,138.45, 13,988.67 and 5,886.99 is: 8,122.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,138.45 : 13,988.67 = 5,886.99 : x
  2. Step 2: Convert to fraction form
    10,138.45/13,988.67 = 5,886.99/x
  3. Step 3: Cross multiply
    10,138.45x = 13,988.67 × 5,886.99
  4. Step 4: Simplify right side
    10,138.45x = 82,351,160.40
  5. Step 5: Solve for x
    x = 82,351,160.40/10,138.45
  6. Step 6: Final answer
    x = 8,122.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.