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Finding the Fourth Proportional to 14,235.90, 19,644.51 and 7,861.47

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Solution

The fourth proportional to 14,235.90, 19,644.51 and 7,861.47 is: 10,848.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,235.90 : 19,644.51 = 7,861.47 : x
  2. Step 2: Convert to fraction form
    14,235.90/19,644.51 = 7,861.47/x
  3. Step 3: Cross multiply
    14,235.90x = 19,644.51 × 7,861.47
  4. Step 4: Simplify right side
    14,235.90x = 154,434,726.03
  5. Step 5: Solve for x
    x = 154,434,726.03/14,235.90
  6. Step 6: Final answer
    x = 10,848.26

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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.