Home / 20,809.60-31,096.76-14,977.60

Finding the Fourth Proportional to 20,809.60, 31,096.76 and 14,977.60

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Solution

The fourth proportional to 20,809.60, 31,096.76 and 14,977.60 is: 22,381.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,809.60 : 31,096.76 = 14,977.60 : x
  2. Step 2: Convert to fraction form
    20,809.60/31,096.76 = 14,977.60/x
  3. Step 3: Cross multiply
    20,809.60x = 31,096.76 × 14,977.60
  4. Step 4: Simplify right side
    20,809.60x = 465,754,832.58
  5. Step 5: Solve for x
    x = 465,754,832.58/20,809.60
  6. Step 6: Final answer
    x = 22,381.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.