Home / 31,032.26-42,774.74-20,957.48

Finding the Fourth Proportional to 31,032.26, 42,774.74 and 20,957.48

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Solution

The fourth proportional to 31,032.26, 42,774.74 and 20,957.48 is: 28,887.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,032.26 : 42,774.74 = 20,957.48 : x
  2. Step 2: Convert to fraction form
    31,032.26/42,774.74 = 20,957.48/x
  3. Step 3: Cross multiply
    31,032.26x = 42,774.74 × 20,957.48
  4. Step 4: Simplify right side
    31,032.26x = 896,450,758.06
  5. Step 5: Solve for x
    x = 896,450,758.06/31,032.26
  6. Step 6: Final answer
    x = 28,887.70

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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.