Home / 21,184.36-31,776.86-10,092.20

Finding the Fourth Proportional to 21,184.36, 31,776.86 and 10,092.20

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Solution

The fourth proportional to 21,184.36, 31,776.86 and 10,092.20 is: 15,138.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,184.36 : 31,776.86 = 10,092.20 : x
  2. Step 2: Convert to fraction form
    21,184.36/31,776.86 = 10,092.20/x
  3. Step 3: Cross multiply
    21,184.36x = 31,776.86 × 10,092.20
  4. Step 4: Simplify right side
    21,184.36x = 320,698,426.49
  5. Step 5: Solve for x
    x = 320,698,426.49/21,184.36
  6. Step 6: Final answer
    x = 15,138.45

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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.