Home / 15,230.92-21,005.58-9,923.80

Finding the Fourth Proportional to 15,230.92, 21,005.58 and 9,923.80

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Solution

The fourth proportional to 15,230.92, 21,005.58 and 9,923.80 is: 13,686.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,230.92 : 21,005.58 = 9,923.80 : x
  2. Step 2: Convert to fraction form
    15,230.92/21,005.58 = 9,923.80/x
  3. Step 3: Cross multiply
    15,230.92x = 21,005.58 × 9,923.80
  4. Step 4: Simplify right side
    15,230.92x = 208,455,174.80
  5. Step 5: Solve for x
    x = 208,455,174.80/15,230.92
  6. Step 6: Final answer
    x = 13,686.32

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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.