Home / 31,032.08-42,838.92-19,860.56

Finding the Fourth Proportional to 31,032.08, 42,838.92 and 19,860.56

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Solution

The fourth proportional to 31,032.08, 42,838.92 and 19,860.56 is: 27,416.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,032.08 : 42,838.92 = 19,860.56 : x
  2. Step 2: Convert to fraction form
    31,032.08/42,838.92 = 19,860.56/x
  3. Step 3: Cross multiply
    31,032.08x = 42,838.92 × 19,860.56
  4. Step 4: Simplify right side
    31,032.08x = 850,804,941.00
  5. Step 5: Solve for x
    x = 850,804,941.00/31,032.08
  6. Step 6: Final answer
    x = 27,416.95

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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.