Home / 18,890.01-28,302.21-13,255.74

Finding the Fourth Proportional to 18,890.01, 28,302.21 and 13,255.74

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Solution

The fourth proportional to 18,890.01, 28,302.21 and 13,255.74 is: 19,860.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,890.01 : 28,302.21 = 13,255.74 : x
  2. Step 2: Convert to fraction form
    18,890.01/28,302.21 = 13,255.74/x
  3. Step 3: Cross multiply
    18,890.01x = 28,302.21 × 13,255.74
  4. Step 4: Simplify right side
    18,890.01x = 375,166,737.19
  5. Step 5: Solve for x
    x = 375,166,737.19/18,890.01
  6. Step 6: Final answer
    x = 19,860.59

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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.