Home / 20,360.92-28,111.76-12,715.84

Finding the Fourth Proportional to 20,360.92, 28,111.76 and 12,715.84

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Solution

The fourth proportional to 20,360.92, 28,111.76 and 12,715.84 is: 17,556.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,360.92 : 28,111.76 = 12,715.84 : x
  2. Step 2: Convert to fraction form
    20,360.92/28,111.76 = 12,715.84/x
  3. Step 3: Cross multiply
    20,360.92x = 28,111.76 × 12,715.84
  4. Step 4: Simplify right side
    20,360.92x = 357,464,642.28
  5. Step 5: Solve for x
    x = 357,464,642.28/20,360.92
  6. Step 6: Final answer
    x = 17,556.41

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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.