Home / 15,365.21-21,204.38-8,651.06

Finding the Fourth Proportional to 15,365.21, 21,204.38 and 8,651.06

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Solution

The fourth proportional to 15,365.21, 21,204.38 and 8,651.06 is: 11,938.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,365.21 : 21,204.38 = 8,651.06 : x
  2. Step 2: Convert to fraction form
    15,365.21/21,204.38 = 8,651.06/x
  3. Step 3: Cross multiply
    15,365.21x = 21,204.38 × 8,651.06
  4. Step 4: Simplify right side
    15,365.21x = 183,440,373.40
  5. Step 5: Solve for x
    x = 183,440,373.40/15,365.21
  6. Step 6: Final answer
    x = 11,938.69

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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.