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Finding the Fourth Proportional to 15,653.09, 23,479.63 and 8,155.09

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Solution

The fourth proportional to 15,653.09, 23,479.63 and 8,155.09 is: 12,232.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,653.09 : 23,479.63 = 8,155.09 : x
  2. Step 2: Convert to fraction form
    15,653.09/23,479.63 = 8,155.09/x
  3. Step 3: Cross multiply
    15,653.09x = 23,479.63 × 8,155.09
  4. Step 4: Simplify right side
    15,653.09x = 191,478,495.82
  5. Step 5: Solve for x
    x = 191,478,495.82/15,653.09
  6. Step 6: Final answer
    x = 12,232.63

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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.