Home / 20,855.36-31,261.16-9,752.69

Finding the Fourth Proportional to 20,855.36, 31,261.16 and 9,752.69

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Solution

The fourth proportional to 20,855.36, 31,261.16 and 9,752.69 is: 14,618.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,855.36 : 31,261.16 = 9,752.69 : x
  2. Step 2: Convert to fraction form
    20,855.36/31,261.16 = 9,752.69/x
  3. Step 3: Cross multiply
    20,855.36x = 31,261.16 × 9,752.69
  4. Step 4: Simplify right side
    20,855.36x = 304,880,402.52
  5. Step 5: Solve for x
    x = 304,880,402.52/20,855.36
  6. Step 6: Final answer
    x = 14,618.80

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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.