Home / 31,485.95-43,436.54-21,273.68

Finding the Fourth Proportional to 31,485.95, 43,436.54 and 21,273.68

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Solution

The fourth proportional to 31,485.95, 43,436.54 and 21,273.68 is: 29,348.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,485.95 : 43,436.54 = 21,273.68 : x
  2. Step 2: Convert to fraction form
    31,485.95/43,436.54 = 21,273.68/x
  3. Step 3: Cross multiply
    31,485.95x = 43,436.54 × 21,273.68
  4. Step 4: Simplify right side
    31,485.95x = 924,054,728.72
  5. Step 5: Solve for x
    x = 924,054,728.72/31,485.95
  6. Step 6: Final answer
    x = 29,348.17

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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.