Home / 19,325.61-28,979.42-11,322.79

Finding the Fourth Proportional to 19,325.61, 28,979.42 and 11,322.79

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Solution

The fourth proportional to 19,325.61, 28,979.42 and 11,322.79 is: 16,978.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,325.61 : 28,979.42 = 11,322.79 : x
  2. Step 2: Convert to fraction form
    19,325.61/28,979.42 = 11,322.79/x
  3. Step 3: Cross multiply
    19,325.61x = 28,979.42 × 11,322.79
  4. Step 4: Simplify right side
    19,325.61x = 328,127,821.61
  5. Step 5: Solve for x
    x = 328,127,821.61/19,325.61
  6. Step 6: Final answer
    x = 16,978.91

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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.