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Finding the Fourth Proportional to 14,425.48, 19,907.31 and 8,457.31

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Solution

The fourth proportional to 14,425.48, 19,907.31 and 8,457.31 is: 11,671.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,425.48 : 19,907.31 = 8,457.31 : x
  2. Step 2: Convert to fraction form
    14,425.48/19,907.31 = 8,457.31/x
  3. Step 3: Cross multiply
    14,425.48x = 19,907.31 × 8,457.31
  4. Step 4: Simplify right side
    14,425.48x = 168,362,291.94
  5. Step 5: Solve for x
    x = 168,362,291.94/14,425.48
  6. Step 6: Final answer
    x = 11,671.17

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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.