Home / 18,989.49-26,194.55-11,430.57

Finding the Fourth Proportional to 18,989.49, 26,194.55 and 11,430.57

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Solution

The fourth proportional to 18,989.49, 26,194.55 and 11,430.57 is: 15,767.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989.49 : 26,194.55 = 11,430.57 : x
  2. Step 2: Convert to fraction form
    18,989.49/26,194.55 = 11,430.57/x
  3. Step 3: Cross multiply
    18,989.49x = 26,194.55 × 11,430.57
  4. Step 4: Simplify right side
    18,989.49x = 299,418,580.24
  5. Step 5: Solve for x
    x = 299,418,580.24/18,989.49
  6. Step 6: Final answer
    x = 15,767.59

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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.