Home / 10,139.03-13,990.62-5,662.63

Finding the Fourth Proportional to 10,139.03, 13,990.62 and 5,662.63

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Solution

The fourth proportional to 10,139.03, 13,990.62 and 5,662.63 is: 7,813.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,139.03 : 13,990.62 = 5,662.63 : x
  2. Step 2: Convert to fraction form
    10,139.03/13,990.62 = 5,662.63/x
  3. Step 3: Cross multiply
    10,139.03x = 13,990.62 × 5,662.63
  4. Step 4: Simplify right side
    10,139.03x = 79,223,704.53
  5. Step 5: Solve for x
    x = 79,223,704.53/10,139.03
  6. Step 6: Final answer
    x = 7,813.74

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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.