Home / 20,409.08-28,166.13-11,456.02

Finding the Fourth Proportional to 20,409.08, 28,166.13 and 11,456.02

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Solution

The fourth proportional to 20,409.08, 28,166.13 and 11,456.02 is: 15,810.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,409.08 : 28,166.13 = 11,456.02 : x
  2. Step 2: Convert to fraction form
    20,409.08/28,166.13 = 11,456.02/x
  3. Step 3: Cross multiply
    20,409.08x = 28,166.13 × 11,456.02
  4. Step 4: Simplify right side
    20,409.08x = 322,671,748.60
  5. Step 5: Solve for x
    x = 322,671,748.60/20,409.08
  6. Step 6: Final answer
    x = 15,810.21

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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.