Home / 21,017.36-29,005.69-12,066.59

Finding the Fourth Proportional to 21,017.36, 29,005.69 and 12,066.59

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Solution

The fourth proportional to 21,017.36, 29,005.69 and 12,066.59 is: 16,652.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,017.36 : 29,005.69 = 12,066.59 : x
  2. Step 2: Convert to fraction form
    21,017.36/29,005.69 = 12,066.59/x
  3. Step 3: Cross multiply
    21,017.36x = 29,005.69 × 12,066.59
  4. Step 4: Simplify right side
    21,017.36x = 349,999,768.90
  5. Step 5: Solve for x
    x = 349,999,768.90/21,017.36
  6. Step 6: Final answer
    x = 16,652.89

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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.