Home / 25,785.18-38,692.08-13,938.66

Finding the Fourth Proportional to 25,785.18, 38,692.08 and 13,938.66

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Solution

The fourth proportional to 25,785.18, 38,692.08 and 13,938.66 is: 20,915.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,785.18 : 38,692.08 = 13,938.66 : x
  2. Step 2: Convert to fraction form
    25,785.18/38,692.08 = 13,938.66/x
  3. Step 3: Cross multiply
    25,785.18x = 38,692.08 × 13,938.66
  4. Step 4: Simplify right side
    25,785.18x = 539,315,747.81
  5. Step 5: Solve for x
    x = 539,315,747.81/25,785.18
  6. Step 6: Final answer
    x = 20,915.73

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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.