Home / 15,359.96-21,196.79-8,645.69

Finding the Fourth Proportional to 15,359.96, 21,196.79 and 8,645.69

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Solution

The fourth proportional to 15,359.96, 21,196.79 and 8,645.69 is: 11,931.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,359.96 : 21,196.79 = 8,645.69 : x
  2. Step 2: Convert to fraction form
    15,359.96/21,196.79 = 8,645.69/x
  3. Step 3: Cross multiply
    15,359.96x = 21,196.79 × 8,645.69
  4. Step 4: Simplify right side
    15,359.96x = 183,260,726.12
  5. Step 5: Solve for x
    x = 183,260,726.12/15,359.96
  6. Step 6: Final answer
    x = 11,931.07

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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.