Home / 20,925.08-28,869.46-11,969.32

Finding the Fourth Proportional to 20,925.08, 28,869.46 and 11,969.32

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Solution

The fourth proportional to 20,925.08, 28,869.46 and 11,969.32 is: 16,513.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,925.08 : 28,869.46 = 11,969.32 : x
  2. Step 2: Convert to fraction form
    20,925.08/28,869.46 = 11,969.32/x
  3. Step 3: Cross multiply
    20,925.08x = 28,869.46 × 11,969.32
  4. Step 4: Simplify right side
    20,925.08x = 345,547,804.97
  5. Step 5: Solve for x
    x = 345,547,804.97/20,925.08
  6. Step 6: Final answer
    x = 16,513.57

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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.