Home / 21,066.77-29,077.13-12,119.45

Finding the Fourth Proportional to 21,066.77, 29,077.13 and 12,119.45

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Solution

The fourth proportional to 21,066.77, 29,077.13 and 12,119.45 is: 16,727.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,066.77 : 29,077.13 = 12,119.45 : x
  2. Step 2: Convert to fraction form
    21,066.77/29,077.13 = 12,119.45/x
  3. Step 3: Cross multiply
    21,066.77x = 29,077.13 × 12,119.45
  4. Step 4: Simplify right side
    21,066.77x = 352,398,617.20
  5. Step 5: Solve for x
    x = 352,398,617.20/21,066.77
  6. Step 6: Final answer
    x = 16,727.70

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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.