Home / 36,018.18-49,703.49-20,909.66

Finding the Fourth Proportional to 36,018.18, 49,703.49 and 20,909.66

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Solution

The fourth proportional to 36,018.18, 49,703.49 and 20,909.66 is: 28,854.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,018.18 : 49,703.49 = 20,909.66 : x
  2. Step 2: Convert to fraction form
    36,018.18/49,703.49 = 20,909.66/x
  3. Step 3: Cross multiply
    36,018.18x = 49,703.49 × 20,909.66
  4. Step 4: Simplify right side
    36,018.18x = 1,039,282,828.20
  5. Step 5: Solve for x
    x = 1,039,282,828.20/36,018.18
  6. Step 6: Final answer
    x = 28,854.40

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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.