Home / 30,360.60-41,890.50-18,423.66

Finding the Fourth Proportional to 30,360.60, 41,890.50 and 18,423.66

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Solution

The fourth proportional to 30,360.60, 41,890.50 and 18,423.66 is: 25,420.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,360.60 : 41,890.50 = 18,423.66 : x
  2. Step 2: Convert to fraction form
    30,360.60/41,890.50 = 18,423.66/x
  3. Step 3: Cross multiply
    30,360.60x = 41,890.50 × 18,423.66
  4. Step 4: Simplify right side
    30,360.60x = 771,776,329.23
  5. Step 5: Solve for x
    x = 771,776,329.23/30,360.60
  6. Step 6: Final answer
    x = 25,420.33

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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.