Home / 15,368.08-21,208.32-8,653.92

Finding the Fourth Proportional to 15,368.08, 21,208.32 and 8,653.92

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Solution

The fourth proportional to 15,368.08, 21,208.32 and 8,653.92 is: 11,942.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,368.08 : 21,208.32 = 8,653.92 : x
  2. Step 2: Convert to fraction form
    15,368.08/21,208.32 = 8,653.92/x
  3. Step 3: Cross multiply
    15,368.08x = 21,208.32 × 8,653.92
  4. Step 4: Simplify right side
    15,368.08x = 183,535,104.61
  5. Step 5: Solve for x
    x = 183,535,104.61/15,368.08
  6. Step 6: Final answer
    x = 11,942.62

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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.