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Finding the Fourth Proportional to 28,010.30, 42,003.30 and 9,283.10

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Solution

The fourth proportional to 28,010.30, 42,003.30 and 9,283.10 is: 13,920.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,010.30 : 42,003.30 = 9,283.10 : x
  2. Step 2: Convert to fraction form
    28,010.30/42,003.30 = 9,283.10/x
  3. Step 3: Cross multiply
    28,010.30x = 42,003.30 × 9,283.10
  4. Step 4: Simplify right side
    28,010.30x = 389,920,834.23
  5. Step 5: Solve for x
    x = 389,920,834.23/28,010.30
  6. Step 6: Final answer
    x = 13,920.62

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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.