Home / 15,369.33-21,209.47-8,655.62

Finding the Fourth Proportional to 15,369.33, 21,209.47 and 8,655.62

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Solution

The fourth proportional to 15,369.33, 21,209.47 and 8,655.62 is: 11,944.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,369.33 : 21,209.47 = 8,655.62 : x
  2. Step 2: Convert to fraction form
    15,369.33/21,209.47 = 8,655.62/x
  3. Step 3: Cross multiply
    15,369.33x = 21,209.47 × 8,655.62
  4. Step 4: Simplify right side
    15,369.33x = 183,581,112.72
  5. Step 5: Solve for x
    x = 183,581,112.72/15,369.33
  6. Step 6: Final answer
    x = 11,944.64

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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.