Home / 42,010.08-63,000.48-12,420

Finding the Fourth Proportional to 42,010.08, 63,000.48 and 12,420

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Solution

The fourth proportional to 42,010.08, 63,000.48 and 12,420 is: 18,625.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,010.08 : 63,000.48 = 12,420 : x
  2. Step 2: Convert to fraction form
    42,010.08/63,000.48 = 12,420/x
  3. Step 3: Cross multiply
    42,010.08x = 63,000.48 × 12,420
  4. Step 4: Simplify right side
    42,010.08x = 782,465,961.60
  5. Step 5: Solve for x
    x = 782,465,961.60/42,010.08
  6. Step 6: Final answer
    x = 18,625.67

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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.