Home / 20,436.02-28,200.80-11,938.93

Finding the Fourth Proportional to 20,436.02, 28,200.80 and 11,938.93

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Solution

The fourth proportional to 20,436.02, 28,200.80 and 11,938.93 is: 16,475.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,436.02 : 28,200.80 = 11,938.93 : x
  2. Step 2: Convert to fraction form
    20,436.02/28,200.80 = 11,938.93/x
  3. Step 3: Cross multiply
    20,436.02x = 28,200.80 × 11,938.93
  4. Step 4: Simplify right side
    20,436.02x = 336,687,176.45
  5. Step 5: Solve for x
    x = 336,687,176.45/20,436.02
  6. Step 6: Final answer
    x = 16,475.19

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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.