Home / 13,899.48-20,828.60-7,305.68

Finding the Fourth Proportional to 13,899.48, 20,828.60 and 7,305.68

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Solution

The fourth proportional to 13,899.48, 20,828.60 and 7,305.68 is: 10,947.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,899.48 : 20,828.60 = 7,305.68 : x
  2. Step 2: Convert to fraction form
    13,899.48/20,828.60 = 7,305.68/x
  3. Step 3: Cross multiply
    13,899.48x = 20,828.60 × 7,305.68
  4. Step 4: Simplify right side
    13,899.48x = 152,167,012.23
  5. Step 5: Solve for x
    x = 152,167,012.23/13,899.48
  6. Step 6: Final answer
    x = 10,947.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.