Home / 18,906.13-26,071.12-12,530.51

Finding the Fourth Proportional to 18,906.13, 26,071.12 and 12,530.51

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Solution

The fourth proportional to 18,906.13, 26,071.12 and 12,530.51 is: 17,279.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,906.13 : 26,071.12 = 12,530.51 : x
  2. Step 2: Convert to fraction form
    18,906.13/26,071.12 = 12,530.51/x
  3. Step 3: Cross multiply
    18,906.13x = 26,071.12 × 12,530.51
  4. Step 4: Simplify right side
    18,906.13x = 326,684,412.95
  5. Step 5: Solve for x
    x = 326,684,412.95/18,906.13
  6. Step 6: Final answer
    x = 17,279.28

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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.