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Finding the Fourth Proportional to 14,848.91, 20,491.21 and 8,134.51

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Solution

The fourth proportional to 14,848.91, 20,491.21 and 8,134.51 is: 11,225.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,848.91 : 20,491.21 = 8,134.51 : x
  2. Step 2: Convert to fraction form
    14,848.91/20,491.21 = 8,134.51/x
  3. Step 3: Cross multiply
    14,848.91x = 20,491.21 × 8,134.51
  4. Step 4: Simplify right side
    14,848.91x = 166,685,952.66
  5. Step 5: Solve for x
    x = 166,685,952.66/14,848.91
  6. Step 6: Final answer
    x = 11,225.47

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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.