Home / 15,317.03-21,137.37-8,602.76

Finding the Fourth Proportional to 15,317.03, 21,137.37 and 8,602.76

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Solution

The fourth proportional to 15,317.03, 21,137.37 and 8,602.76 is: 11,871.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,317.03 : 21,137.37 = 8,602.76 : x
  2. Step 2: Convert to fraction form
    15,317.03/21,137.37 = 8,602.76/x
  3. Step 3: Cross multiply
    15,317.03x = 21,137.37 × 8,602.76
  4. Step 4: Simplify right side
    15,317.03x = 181,839,721.14
  5. Step 5: Solve for x
    x = 181,839,721.14/15,317.03
  6. Step 6: Final answer
    x = 11,871.73

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.