Home / 28,614.90-42,918.68-11,072.72

Finding the Fourth Proportional to 28,614.90, 42,918.68 and 11,072.72

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Solution

The fourth proportional to 28,614.90, 42,918.68 and 11,072.72 is: 16,607.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,614.90 : 42,918.68 = 11,072.72 : x
  2. Step 2: Convert to fraction form
    28,614.90/42,918.68 = 11,072.72/x
  3. Step 3: Cross multiply
    28,614.90x = 42,918.68 × 11,072.72
  4. Step 4: Simplify right side
    28,614.90x = 475,226,526.41
  5. Step 5: Solve for x
    x = 475,226,526.41/28,614.90
  6. Step 6: Final answer
    x = 16,607.66

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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.