Home / 28,782.78-39,720.12-16,036.11

Finding the Fourth Proportional to 28,782.78, 39,720.12 and 16,036.11

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Solution

The fourth proportional to 28,782.78, 39,720.12 and 16,036.11 is: 22,129.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,782.78 : 39,720.12 = 16,036.11 : x
  2. Step 2: Convert to fraction form
    28,782.78/39,720.12 = 16,036.11/x
  3. Step 3: Cross multiply
    28,782.78x = 39,720.12 × 16,036.11
  4. Step 4: Simplify right side
    28,782.78x = 636,956,213.53
  5. Step 5: Solve for x
    x = 636,956,213.53/28,782.78
  6. Step 6: Final answer
    x = 22,129.77

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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.