Home / 36,678.91-55,038.80-19,811.57

Finding the Fourth Proportional to 36,678.91, 55,038.80 and 19,811.57

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Solution

The fourth proportional to 36,678.91, 55,038.80 and 19,811.57 is: 29,728.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,678.91 : 55,038.80 = 19,811.57 : x
  2. Step 2: Convert to fraction form
    36,678.91/55,038.80 = 19,811.57/x
  3. Step 3: Cross multiply
    36,678.91x = 55,038.80 × 19,811.57
  4. Step 4: Simplify right side
    36,678.91x = 1,090,405,077.46
  5. Step 5: Solve for x
    x = 1,090,405,077.46/36,678.91
  6. Step 6: Final answer
    x = 29,728.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.