Home / 20,737.52-28,618.08-12,775.22

Finding the Fourth Proportional to 20,737.52, 28,618.08 and 12,775.22

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Solution

The fourth proportional to 20,737.52, 28,618.08 and 12,775.22 is: 17,629.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,737.52 : 28,618.08 = 12,775.22 : x
  2. Step 2: Convert to fraction form
    20,737.52/28,618.08 = 12,775.22/x
  3. Step 3: Cross multiply
    20,737.52x = 28,618.08 × 12,775.22
  4. Step 4: Simplify right side
    20,737.52x = 365,602,267.98
  5. Step 5: Solve for x
    x = 365,602,267.98/20,737.52
  6. Step 6: Final answer
    x = 17,629.99

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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.