Home / 15,727.60-21,703.08-8,557.44

Finding the Fourth Proportional to 15,727.60, 21,703.08 and 8,557.44

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Solution

The fourth proportional to 15,727.60, 21,703.08 and 8,557.44 is: 11,808.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,727.60 : 21,703.08 = 8,557.44 : x
  2. Step 2: Convert to fraction form
    15,727.60/21,703.08 = 8,557.44/x
  3. Step 3: Cross multiply
    15,727.60x = 21,703.08 × 8,557.44
  4. Step 4: Simplify right side
    15,727.60x = 185,722,804.92
  5. Step 5: Solve for x
    x = 185,722,804.92/15,727.60
  6. Step 6: Final answer
    x = 11,808.72

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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.