Home / 12,111.12-18,064.65-11,742.06

Finding the Fourth Proportional to 12,111.12, 18,064.65 and 11,742.06

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Solution

The fourth proportional to 12,111.12, 18,064.65 and 11,742.06 is: 17,514.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,111.12 : 18,064.65 = 11,742.06 : x
  2. Step 2: Convert to fraction form
    12,111.12/18,064.65 = 11,742.06/x
  3. Step 3: Cross multiply
    12,111.12x = 18,064.65 × 11,742.06
  4. Step 4: Simplify right side
    12,111.12x = 212,116,204.18
  5. Step 5: Solve for x
    x = 212,116,204.18/12,111.12
  6. Step 6: Final answer
    x = 17,514.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.