Home / 42,518.25-63,780.08-12,938.27

Finding the Fourth Proportional to 42,518.25, 63,780.08 and 12,938.27

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Solution

The fourth proportional to 42,518.25, 63,780.08 and 12,938.27 is: 19,408.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,518.25 : 63,780.08 = 12,938.27 : x
  2. Step 2: Convert to fraction form
    42,518.25/63,780.08 = 12,938.27/x
  3. Step 3: Cross multiply
    42,518.25x = 63,780.08 × 12,938.27
  4. Step 4: Simplify right side
    42,518.25x = 825,203,512.07
  5. Step 5: Solve for x
    x = 825,203,512.07/42,518.25
  6. Step 6: Final answer
    x = 19,408.22

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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.