Home / 21,077.94-31,632.48-9,984.63

Finding the Fourth Proportional to 21,077.94, 31,632.48 and 9,984.63

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Solution

The fourth proportional to 21,077.94, 31,632.48 and 9,984.63 is: 14,984.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,077.94 : 31,632.48 = 9,984.63 : x
  2. Step 2: Convert to fraction form
    21,077.94/31,632.48 = 9,984.63/x
  3. Step 3: Cross multiply
    21,077.94x = 31,632.48 × 9,984.63
  4. Step 4: Simplify right side
    21,077.94x = 315,838,608.78
  5. Step 5: Solve for x
    x = 315,838,608.78/21,077.94
  6. Step 6: Final answer
    x = 14,984.32

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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.