Home / 28,290.40-42,436.94-9,316.24

Finding the Fourth Proportional to 28,290.40, 42,436.94 and 9,316.24

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Solution

The fourth proportional to 28,290.40, 42,436.94 and 9,316.24 is: 13,974.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,290.40 : 42,436.94 = 9,316.24 : x
  2. Step 2: Convert to fraction form
    28,290.40/42,436.94 = 9,316.24/x
  3. Step 3: Cross multiply
    28,290.40x = 42,436.94 × 9,316.24
  4. Step 4: Simplify right side
    28,290.40x = 395,352,717.91
  5. Step 5: Solve for x
    x = 395,352,717.91/28,290.40
  6. Step 6: Final answer
    x = 13,974.80

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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.