Home / 13,603.48-20,403.18-6,485.92

Finding the Fourth Proportional to 13,603.48, 20,403.18 and 6,485.92

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Solution

The fourth proportional to 13,603.48, 20,403.18 and 6,485.92 is: 9,727.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,603.48 : 20,403.18 = 6,485.92 : x
  2. Step 2: Convert to fraction form
    13,603.48/20,403.18 = 6,485.92/x
  3. Step 3: Cross multiply
    13,603.48x = 20,403.18 × 6,485.92
  4. Step 4: Simplify right side
    13,603.48x = 132,333,393.23
  5. Step 5: Solve for x
    x = 132,333,393.23/13,603.48
  6. Step 6: Final answer
    x = 9,727.91

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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.