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Finding the Fourth Proportional to 35,779.84, 53,636.91 and 12,389.92

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Solution

The fourth proportional to 35,779.84, 53,636.91 and 12,389.92 is: 18,573.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,779.84 : 53,636.91 = 12,389.92 : x
  2. Step 2: Convert to fraction form
    35,779.84/53,636.91 = 12,389.92/x
  3. Step 3: Cross multiply
    35,779.84x = 53,636.91 × 12,389.92
  4. Step 4: Simplify right side
    35,779.84x = 664,557,023.95
  5. Step 5: Solve for x
    x = 664,557,023.95/35,779.84
  6. Step 6: Final answer
    x = 18,573.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.