Home / 21,277.59-31,921.49-6,485.60

Finding the Fourth Proportional to 21,277.59, 31,921.49 and 6,485.60

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Solution

The fourth proportional to 21,277.59, 31,921.49 and 6,485.60 is: 9,729.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,277.59 : 31,921.49 = 6,485.60 : x
  2. Step 2: Convert to fraction form
    21,277.59/31,921.49 = 6,485.60/x
  3. Step 3: Cross multiply
    21,277.59x = 31,921.49 × 6,485.60
  4. Step 4: Simplify right side
    21,277.59x = 207,029,823.51
  5. Step 5: Solve for x
    x = 207,029,823.51/21,277.59
  6. Step 6: Final answer
    x = 9,729.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.