Home / 19,328.61-28,983.93-11,325.78

Finding the Fourth Proportional to 19,328.61, 28,983.93 and 11,325.78

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Solution

The fourth proportional to 19,328.61, 28,983.93 and 11,325.78 is: 16,983.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,328.61 : 28,983.93 = 11,325.78 : x
  2. Step 2: Convert to fraction form
    19,328.61/28,983.93 = 11,325.78/x
  3. Step 3: Cross multiply
    19,328.61x = 28,983.93 × 11,325.78
  4. Step 4: Simplify right side
    19,328.61x = 328,265,614.72
  5. Step 5: Solve for x
    x = 328,265,614.72/19,328.61
  6. Step 6: Final answer
    x = 16,983.41

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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.