Home / 14,145.50-19,521.60-7,858.28

Finding the Fourth Proportional to 14,145.50, 19,521.60 and 7,858.28

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Solution

The fourth proportional to 14,145.50, 19,521.60 and 7,858.28 is: 10,844.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,145.50 : 19,521.60 = 7,858.28 : x
  2. Step 2: Convert to fraction form
    14,145.50/19,521.60 = 7,858.28/x
  3. Step 3: Cross multiply
    14,145.50x = 19,521.60 × 7,858.28
  4. Step 4: Simplify right side
    14,145.50x = 153,406,198.85
  5. Step 5: Solve for x
    x = 153,406,198.85/14,145.50
  6. Step 6: Final answer
    x = 10,844.88

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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.