Home / 21,062.25-31,602.60-9,976.86

Finding the Fourth Proportional to 21,062.25, 31,602.60 and 9,976.86

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Solution

The fourth proportional to 21,062.25, 31,602.60 and 9,976.86 is: 14,969.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,062.25 : 31,602.60 = 9,976.86 : x
  2. Step 2: Convert to fraction form
    21,062.25/31,602.60 = 9,976.86/x
  3. Step 3: Cross multiply
    21,062.25x = 31,602.60 × 9,976.86
  4. Step 4: Simplify right side
    21,062.25x = 315,294,715.84
  5. Step 5: Solve for x
    x = 315,294,715.84/21,062.25
  6. Step 6: Final answer
    x = 14,969.66

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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.