Home / 20,686.95-31,030.56-14,096.79

Finding the Fourth Proportional to 20,686.95, 31,030.56 and 14,096.79

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Solution

The fourth proportional to 20,686.95, 31,030.56 and 14,096.79 is: 21,145.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686.95 : 31,030.56 = 14,096.79 : x
  2. Step 2: Convert to fraction form
    20,686.95/31,030.56 = 14,096.79/x
  3. Step 3: Cross multiply
    20,686.95x = 31,030.56 × 14,096.79
  4. Step 4: Simplify right side
    20,686.95x = 437,431,287.90
  5. Step 5: Solve for x
    x = 437,431,287.90/20,686.95
  6. Step 6: Final answer
    x = 21,145.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.