Home / 30,557.11-45,830.85-18,706.81

Finding the Fourth Proportional to 30,557.11, 45,830.85 and 18,706.81

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Solution

The fourth proportional to 30,557.11, 45,830.85 and 18,706.81 is: 28,057.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,557.11 : 45,830.85 = 18,706.81 : x
  2. Step 2: Convert to fraction form
    30,557.11/45,830.85 = 18,706.81/x
  3. Step 3: Cross multiply
    30,557.11x = 45,830.85 × 18,706.81
  4. Step 4: Simplify right side
    30,557.11x = 857,349,003.09
  5. Step 5: Solve for x
    x = 857,349,003.09/30,557.11
  6. Step 6: Final answer
    x = 28,057.27

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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.