Home / 31,533.95-43,534.67-20,938.07

Finding the Fourth Proportional to 31,533.95, 43,534.67 and 20,938.07

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Solution

The fourth proportional to 31,533.95, 43,534.67 and 20,938.07 is: 28,906.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,533.95 : 43,534.67 = 20,938.07 : x
  2. Step 2: Convert to fraction form
    31,533.95/43,534.67 = 20,938.07/x
  3. Step 3: Cross multiply
    31,533.95x = 43,534.67 × 20,938.07
  4. Step 4: Simplify right side
    31,533.95x = 911,531,645.52
  5. Step 5: Solve for x
    x = 911,531,645.52/31,533.95
  6. Step 6: Final answer
    x = 28,906.36

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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.