Home / 15,490.62-21,369.90-10,458.09

Finding the Fourth Proportional to 15,490.62, 21,369.90 and 10,458.09

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Solution

The fourth proportional to 15,490.62, 21,369.90 and 10,458.09 is: 14,427.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,490.62 : 21,369.90 = 10,458.09 : x
  2. Step 2: Convert to fraction form
    15,490.62/21,369.90 = 10,458.09/x
  3. Step 3: Cross multiply
    15,490.62x = 21,369.90 × 10,458.09
  4. Step 4: Simplify right side
    15,490.62x = 223,488,337.49
  5. Step 5: Solve for x
    x = 223,488,337.49/15,490.62
  6. Step 6: Final answer
    x = 14,427.33

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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.