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Finding the Fourth Proportional to 14,358.49, 19,814.78 and 7,985.66

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Solution

The fourth proportional to 14,358.49, 19,814.78 and 7,985.66 is: 11,020.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,358.49 : 19,814.78 = 7,985.66 : x
  2. Step 2: Convert to fraction form
    14,358.49/19,814.78 = 7,985.66/x
  3. Step 3: Cross multiply
    14,358.49x = 19,814.78 × 7,985.66
  4. Step 4: Simplify right side
    14,358.49x = 158,234,096.05
  5. Step 5: Solve for x
    x = 158,234,096.05/14,358.49
  6. Step 6: Final answer
    x = 11,020.25

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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.