Home / 20,042.47-27,674.96-12,875.95

Finding the Fourth Proportional to 20,042.47, 27,674.96 and 12,875.95

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Solution

The fourth proportional to 20,042.47, 27,674.96 and 12,875.95 is: 17,779.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,042.47 : 27,674.96 = 12,875.95 : x
  2. Step 2: Convert to fraction form
    20,042.47/27,674.96 = 12,875.95/x
  3. Step 3: Cross multiply
    20,042.47x = 27,674.96 × 12,875.95
  4. Step 4: Simplify right side
    20,042.47x = 356,341,401.21
  5. Step 5: Solve for x
    x = 356,341,401.21/20,042.47
  6. Step 6: Final answer
    x = 17,779.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.