Home / 28,545.49-42,817.21-7,485.37

Finding the Fourth Proportional to 28,545.49, 42,817.21 and 7,485.37

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Solution

The fourth proportional to 28,545.49, 42,817.21 and 7,485.37 is: 11,227.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,545.49 : 42,817.21 = 7,485.37 : x
  2. Step 2: Convert to fraction form
    28,545.49/42,817.21 = 7,485.37/x
  3. Step 3: Cross multiply
    28,545.49x = 42,817.21 × 7,485.37
  4. Step 4: Simplify right side
    28,545.49x = 320,502,659.22
  5. Step 5: Solve for x
    x = 320,502,659.22/28,545.49
  6. Step 6: Final answer
    x = 11,227.79

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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.