Home / 20,718.59-31,051.15-7,555.28

Finding the Fourth Proportional to 20,718.59, 31,051.15 and 7,555.28

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Solution

The fourth proportional to 20,718.59, 31,051.15 and 7,555.28 is: 11,323.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718.59 : 31,051.15 = 7,555.28 : x
  2. Step 2: Convert to fraction form
    20,718.59/31,051.15 = 7,555.28/x
  3. Step 3: Cross multiply
    20,718.59x = 31,051.15 × 7,555.28
  4. Step 4: Simplify right side
    20,718.59x = 234,599,958.43
  5. Step 5: Solve for x
    x = 234,599,958.43/20,718.59
  6. Step 6: Final answer
    x = 11,323.17

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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.