Home / 31,603.04-43,574.64-20,975.84

Finding the Fourth Proportional to 31,603.04, 43,574.64 and 20,975.84

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Solution

The fourth proportional to 31,603.04, 43,574.64 and 20,975.84 is: 28,921.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,603.04 : 43,574.64 = 20,975.84 : x
  2. Step 2: Convert to fraction form
    31,603.04/43,574.64 = 20,975.84/x
  3. Step 3: Cross multiply
    31,603.04x = 43,574.64 × 20,975.84
  4. Step 4: Simplify right side
    31,603.04x = 914,014,676.70
  5. Step 5: Solve for x
    x = 914,014,676.70/31,603.04
  6. Step 6: Final answer
    x = 28,921.73

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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.