Home / 14,985.29-20,678.57-8,611.89

Finding the Fourth Proportional to 14,985.29, 20,678.57 and 8,611.89

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Solution

The fourth proportional to 14,985.29, 20,678.57 and 8,611.89 is: 11,883.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,985.29 : 20,678.57 = 8,611.89 : x
  2. Step 2: Convert to fraction form
    14,985.29/20,678.57 = 8,611.89/x
  3. Step 3: Cross multiply
    14,985.29x = 20,678.57 × 8,611.89
  4. Step 4: Simplify right side
    14,985.29x = 178,081,704.81
  5. Step 5: Solve for x
    x = 178,081,704.81/14,985.29
  6. Step 6: Final answer
    x = 11,883.77

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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.