Home / 42,380.15-63,580.48-12,796.20

Finding the Fourth Proportional to 42,380.15, 63,580.48 and 12,796.20

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Solution

The fourth proportional to 42,380.15, 63,580.48 and 12,796.20 is: 19,197.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,380.15 : 63,580.48 = 12,796.20 : x
  2. Step 2: Convert to fraction form
    42,380.15/63,580.48 = 12,796.20/x
  3. Step 3: Cross multiply
    42,380.15x = 63,580.48 × 12,796.20
  4. Step 4: Simplify right side
    42,380.15x = 813,588,506.19
  5. Step 5: Solve for x
    x = 813,588,506.19/42,380.15
  6. Step 6: Final answer
    x = 19,197.40

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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.