Home / 14,013.78-19,338.88-7,640.36

Finding the Fourth Proportional to 14,013.78, 19,338.88 and 7,640.36

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Solution

The fourth proportional to 14,013.78, 19,338.88 and 7,640.36 is: 10,543.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,013.78 : 19,338.88 = 7,640.36 : x
  2. Step 2: Convert to fraction form
    14,013.78/19,338.88 = 7,640.36/x
  3. Step 3: Cross multiply
    14,013.78x = 19,338.88 × 7,640.36
  4. Step 4: Simplify right side
    14,013.78x = 147,756,005.20
  5. Step 5: Solve for x
    x = 147,756,005.20/14,013.78
  6. Step 6: Final answer
    x = 10,543.62

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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.