Home / 28,359.52-42,561.96-12,778.36

Finding the Fourth Proportional to 28,359.52, 42,561.96 and 12,778.36

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Solution

The fourth proportional to 28,359.52, 42,561.96 and 12,778.36 is: 19,177.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,359.52 : 42,561.96 = 12,778.36 : x
  2. Step 2: Convert to fraction form
    28,359.52/42,561.96 = 12,778.36/x
  3. Step 3: Cross multiply
    28,359.52x = 42,561.96 × 12,778.36
  4. Step 4: Simplify right side
    28,359.52x = 543,872,047.19
  5. Step 5: Solve for x
    x = 543,872,047.19/28,359.52
  6. Step 6: Final answer
    x = 19,177.76

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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.