Home / 31,323.04-43,231.32-18,747.76

Finding the Fourth Proportional to 31,323.04, 43,231.32 and 18,747.76

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Solution

The fourth proportional to 31,323.04, 43,231.32 and 18,747.76 is: 25,875.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,323.04 : 43,231.32 = 18,747.76 : x
  2. Step 2: Convert to fraction form
    31,323.04/43,231.32 = 18,747.76/x
  3. Step 3: Cross multiply
    31,323.04x = 43,231.32 × 18,747.76
  4. Step 4: Simplify right side
    31,323.04x = 810,490,411.84
  5. Step 5: Solve for x
    x = 810,490,411.84/31,323.04
  6. Step 6: Final answer
    x = 25,875.22

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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.