Home / 20,686.88-31,030.38-7,539.24

Finding the Fourth Proportional to 20,686.88, 31,030.38 and 7,539.24

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Solution

The fourth proportional to 20,686.88, 31,030.38 and 7,539.24 is: 11,308.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686.88 : 31,030.38 = 7,539.24 : x
  2. Step 2: Convert to fraction form
    20,686.88/31,030.38 = 7,539.24/x
  3. Step 3: Cross multiply
    20,686.88x = 31,030.38 × 7,539.24
  4. Step 4: Simplify right side
    20,686.88x = 233,945,482.11
  5. Step 5: Solve for x
    x = 233,945,482.11/20,686.88
  6. Step 6: Final answer
    x = 11,308.88

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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.