Home / 31,363.92-43,259.40-20,762.64

Finding the Fourth Proportional to 31,363.92, 43,259.40 and 20,762.64

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Solution

The fourth proportional to 31,363.92, 43,259.40 and 20,762.64 is: 28,637.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,363.92 : 43,259.40 = 20,762.64 : x
  2. Step 2: Convert to fraction form
    31,363.92/43,259.40 = 20,762.64/x
  3. Step 3: Cross multiply
    31,363.92x = 43,259.40 × 20,762.64
  4. Step 4: Simplify right side
    31,363.92x = 898,179,348.82
  5. Step 5: Solve for x
    x = 898,179,348.82/31,363.92
  6. Step 6: Final answer
    x = 28,637.34

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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.