Home / 14,143.05-19,518.03-7,855.29

Finding the Fourth Proportional to 14,143.05, 19,518.03 and 7,855.29

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Solution

The fourth proportional to 14,143.05, 19,518.03 and 7,855.29 is: 10,840.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,143.05 : 19,518.03 = 7,855.29 : x
  2. Step 2: Convert to fraction form
    14,143.05/19,518.03 = 7,855.29/x
  3. Step 3: Cross multiply
    14,143.05x = 19,518.03 × 7,855.29
  4. Step 4: Simplify right side
    14,143.05x = 153,319,785.88
  5. Step 5: Solve for x
    x = 153,319,785.88/14,143.05
  6. Step 6: Final answer
    x = 10,840.65

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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.