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Finding the Fourth Proportional to 14,628.97, 20,187.91 and 7,914.59

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Solution

The fourth proportional to 14,628.97, 20,187.91 and 7,914.59 is: 10,922.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,628.97 : 20,187.91 = 7,914.59 : x
  2. Step 2: Convert to fraction form
    14,628.97/20,187.91 = 7,914.59/x
  3. Step 3: Cross multiply
    14,628.97x = 20,187.91 × 7,914.59
  4. Step 4: Simplify right side
    14,628.97x = 159,779,030.61
  5. Step 5: Solve for x
    x = 159,779,030.61/14,628.97
  6. Step 6: Final answer
    x = 10,922.10

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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.