Home / 31,725.53-43,761.38-20,409.76

Finding the Fourth Proportional to 31,725.53, 43,761.38 and 20,409.76

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Solution

The fourth proportional to 31,725.53, 43,761.38 and 20,409.76 is: 28,152.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,725.53 : 43,761.38 = 20,409.76 : x
  2. Step 2: Convert to fraction form
    31,725.53/43,761.38 = 20,409.76/x
  3. Step 3: Cross multiply
    31,725.53x = 43,761.38 × 20,409.76
  4. Step 4: Simplify right side
    31,725.53x = 893,159,263.07
  5. Step 5: Solve for x
    x = 893,159,263.07/31,725.53
  6. Step 6: Final answer
    x = 28,152.70

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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.