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Finding the Fourth Proportional to 14,661.88, 20,214.36 and 9,347.47

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Solution

The fourth proportional to 14,661.88, 20,214.36 and 9,347.47 is: 12,887.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,661.88 : 20,214.36 = 9,347.47 : x
  2. Step 2: Convert to fraction form
    14,661.88/20,214.36 = 9,347.47/x
  3. Step 3: Cross multiply
    14,661.88x = 20,214.36 × 9,347.47
  4. Step 4: Simplify right side
    14,661.88x = 188,953,123.67
  5. Step 5: Solve for x
    x = 188,953,123.67/14,661.88
  6. Step 6: Final answer
    x = 12,887.37

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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.