Home / 14,028.80-19,359.36-7,740.72

Finding the Fourth Proportional to 14,028.80, 19,359.36 and 7,740.72

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Solution

The fourth proportional to 14,028.80, 19,359.36 and 7,740.72 is: 10,681.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,028.80 : 19,359.36 = 7,740.72 : x
  2. Step 2: Convert to fraction form
    14,028.80/19,359.36 = 7,740.72/x
  3. Step 3: Cross multiply
    14,028.80x = 19,359.36 × 7,740.72
  4. Step 4: Simplify right side
    14,028.80x = 149,855,385.14
  5. Step 5: Solve for x
    x = 149,855,385.14/14,028.80
  6. Step 6: Final answer
    x = 10,681.98

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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.