Home / 15,528.42-21,429.30-8,454.84

Finding the Fourth Proportional to 15,528.42, 21,429.30 and 8,454.84

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Solution

The fourth proportional to 15,528.42, 21,429.30 and 8,454.84 is: 11,667.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,528.42 : 21,429.30 = 8,454.84 : x
  2. Step 2: Convert to fraction form
    15,528.42/21,429.30 = 8,454.84/x
  3. Step 3: Cross multiply
    15,528.42x = 21,429.30 × 8,454.84
  4. Step 4: Simplify right side
    15,528.42x = 181,181,302.81
  5. Step 5: Solve for x
    x = 181,181,302.81/15,528.42
  6. Step 6: Final answer
    x = 11,667.72

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.