Home / 42,360.90-63,529.20-12,771.60

Finding the Fourth Proportional to 42,360.90, 63,529.20 and 12,771.60

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Solution

The fourth proportional to 42,360.90, 63,529.20 and 12,771.60 is: 19,153.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,360.90 : 63,529.20 = 12,771.60 : x
  2. Step 2: Convert to fraction form
    42,360.90/63,529.20 = 12,771.60/x
  3. Step 3: Cross multiply
    42,360.90x = 63,529.20 × 12,771.60
  4. Step 4: Simplify right side
    42,360.90x = 811,369,530.72
  5. Step 5: Solve for x
    x = 811,369,530.72/42,360.90
  6. Step 6: Final answer
    x = 19,153.74

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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.