Home / 20,041.84-27,640.20-12,961.36

Finding the Fourth Proportional to 20,041.84, 27,640.20 and 12,961.36

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Solution

The fourth proportional to 20,041.84, 27,640.20 and 12,961.36 is: 17,875.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,041.84 : 27,640.20 = 12,961.36 : x
  2. Step 2: Convert to fraction form
    20,041.84/27,640.20 = 12,961.36/x
  3. Step 3: Cross multiply
    20,041.84x = 27,640.20 × 12,961.36
  4. Step 4: Simplify right side
    20,041.84x = 358,254,582.67
  5. Step 5: Solve for x
    x = 358,254,582.67/20,041.84
  6. Step 6: Final answer
    x = 17,875.33

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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.