Home / 19,009.18-28,513.81-5,158.18

Finding the Fourth Proportional to 19,009.18, 28,513.81 and 5,158.18

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Solution

The fourth proportional to 19,009.18, 28,513.81 and 5,158.18 is: 7,737.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,009.18 : 28,513.81 = 5,158.18 : x
  2. Step 2: Convert to fraction form
    19,009.18/28,513.81 = 5,158.18/x
  3. Step 3: Cross multiply
    19,009.18x = 28,513.81 × 5,158.18
  4. Step 4: Simplify right side
    19,009.18x = 147,079,221.90
  5. Step 5: Solve for x
    x = 147,079,221.90/19,009.18
  6. Step 6: Final answer
    x = 7,737.28

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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.