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Finding the Fourth Proportional to 28,313.73, 42,475.95 and 9,339.45

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Solution

The fourth proportional to 28,313.73, 42,475.95 and 9,339.45 is: 14,010.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,313.73 : 42,475.95 = 9,339.45 : x
  2. Step 2: Convert to fraction form
    28,313.73/42,475.95 = 9,339.45/x
  3. Step 3: Cross multiply
    28,313.73x = 42,475.95 × 9,339.45
  4. Step 4: Simplify right side
    28,313.73x = 396,702,011.23
  5. Step 5: Solve for x
    x = 396,702,011.23/28,313.73
  6. Step 6: Final answer
    x = 14,010.94

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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.