Home / 18,920.54-26,105.74-12,459.51

Finding the Fourth Proportional to 18,920.54, 26,105.74 and 12,459.51

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Solution

The fourth proportional to 18,920.54, 26,105.74 and 12,459.51 is: 17,191.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,920.54 : 26,105.74 = 12,459.51 : x
  2. Step 2: Convert to fraction form
    18,920.54/26,105.74 = 12,459.51/x
  3. Step 3: Cross multiply
    18,920.54x = 26,105.74 × 12,459.51
  4. Step 4: Simplify right side
    18,920.54x = 325,264,598.06
  5. Step 5: Solve for x
    x = 325,264,598.06/18,920.54
  6. Step 6: Final answer
    x = 17,191.09

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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.