Home / 21,436.65-29,582.55-12,005.28

Finding the Fourth Proportional to 21,436.65, 29,582.55 and 12,005.28

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Solution

The fourth proportional to 21,436.65, 29,582.55 and 12,005.28 is: 16,567.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,436.65 : 29,582.55 = 12,005.28 : x
  2. Step 2: Convert to fraction form
    21,436.65/29,582.55 = 12,005.28/x
  3. Step 3: Cross multiply
    21,436.65x = 29,582.55 × 12,005.28
  4. Step 4: Simplify right side
    21,436.65x = 355,146,795.86
  5. Step 5: Solve for x
    x = 355,146,795.86/21,436.65
  6. Step 6: Final answer
    x = 16,567.27

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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.