Home / 20,985.05-28,956.38-12,032.93

Finding the Fourth Proportional to 20,985.05, 28,956.38 and 12,032.93

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Solution

The fourth proportional to 20,985.05, 28,956.38 and 12,032.93 is: 16,603.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,985.05 : 28,956.38 = 12,032.93 : x
  2. Step 2: Convert to fraction form
    20,985.05/28,956.38 = 12,032.93/x
  3. Step 3: Cross multiply
    20,985.05x = 28,956.38 × 12,032.93
  4. Step 4: Simplify right side
    20,985.05x = 348,429,888.65
  5. Step 5: Solve for x
    x = 348,429,888.65/20,985.05
  6. Step 6: Final answer
    x = 16,603.72

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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.