Home / 31,400.57-43,303.01-20,626.49

Finding the Fourth Proportional to 31,400.57, 43,303.01 and 20,626.49

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Solution

The fourth proportional to 31,400.57, 43,303.01 and 20,626.49 is: 28,444.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,400.57 : 43,303.01 = 20,626.49 : x
  2. Step 2: Convert to fraction form
    31,400.57/43,303.01 = 20,626.49/x
  3. Step 3: Cross multiply
    31,400.57x = 43,303.01 × 20,626.49
  4. Step 4: Simplify right side
    31,400.57x = 893,188,783.09
  5. Step 5: Solve for x
    x = 893,188,783.09/31,400.57
  6. Step 6: Final answer
    x = 28,444.99

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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.