Home / 28,195.17-42,310.98-13,420.77

Finding the Fourth Proportional to 28,195.17, 42,310.98 and 13,420.77

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Solution

The fourth proportional to 28,195.17, 42,310.98 and 13,420.77 is: 20,139.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,195.17 : 42,310.98 = 13,420.77 : x
  2. Step 2: Convert to fraction form
    28,195.17/42,310.98 = 13,420.77/x
  3. Step 3: Cross multiply
    28,195.17x = 42,310.98 × 13,420.77
  4. Step 4: Simplify right side
    28,195.17x = 567,845,931.05
  5. Step 5: Solve for x
    x = 567,845,931.05/28,195.17
  6. Step 6: Final answer
    x = 20,139.83

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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.