Home / 18,910.40-26,108.93-15,341.49

Finding the Fourth Proportional to 18,910.40, 26,108.93 and 15,341.49

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Solution

The fourth proportional to 18,910.40, 26,108.93 and 15,341.49 is: 21,181.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,910.40 : 26,108.93 = 15,341.49 : x
  2. Step 2: Convert to fraction form
    18,910.40/26,108.93 = 15,341.49/x
  3. Step 3: Cross multiply
    18,910.40x = 26,108.93 × 15,341.49
  4. Step 4: Simplify right side
    18,910.40x = 400,549,811.80
  5. Step 5: Solve for x
    x = 400,549,811.80/18,910.40
  6. Step 6: Final answer
    x = 21,181.46

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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.