Home / 21,567.89-29,764.08-12,007.28

Finding the Fourth Proportional to 21,567.89, 29,764.08 and 12,007.28

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Solution

The fourth proportional to 21,567.89, 29,764.08 and 12,007.28 is: 16,570.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,567.89 : 29,764.08 = 12,007.28 : x
  2. Step 2: Convert to fraction form
    21,567.89/29,764.08 = 12,007.28/x
  3. Step 3: Cross multiply
    21,567.89x = 29,764.08 × 12,007.28
  4. Step 4: Simplify right side
    21,567.89x = 357,385,716.91
  5. Step 5: Solve for x
    x = 357,385,716.91/21,567.89
  6. Step 6: Final answer
    x = 16,570.27

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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.